2020 in paleomalacology

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This list 2020 in paleo malacology is a list of new taxa of ammonites and other fossil cephalopods, as well as fossil gastropods, bivalves and other molluscs that are scheduled to be described during the year 2020, as well as other significant discoveries and events related to molluscan paleontology that are scheduled to occur in the year 2020.

Ammonites

New taxa

Name	Novelty	Status	Authors	Age	Type locality	Country	Notes
Acrimeroceras hoppeckense^[1]	Sp. nov	Valid	Korn & Buchwald in Korn et al.	Late Devonian		Germany
Acrimeroceras ropicense^[1]	Sp. nov	Valid	Korn, Bartzsch & Weyer in Korn et al.	Late Devonian
Acrimeroceras saalense^[1]	Sp. nov	Valid	Korn, Bartzsch & Weyer in Korn et al.	Late Devonian
Acutimitoceras alabasense^[2]	Sp. nov	Valid	Nikolaeva	Devonian-Carboniferous boundary		Kazakhstan
Acutimitoceras dzhanganense^[2]	Sp. nov	Valid	Nikolaeva	Devonian-Carboniferous boundary		Kazakhstan
Almites hayasakai^[3]	Sp. nov	Valid	Ehiro & Ozawa	Permian (Asselian)	Taishaku Limestone	Japan
Angolaites elegans^[4]	Sp. nov	Valid	Kennedy in Gale & Kennedy	Early Cretaceous (Albian)	Lower Duck Creek	United States ( Texas)	A member of the family Brancoceratidae.
Aspidoceras schweigertense^[5]	Sp. nov	Valid	Sarti	Late Jurassic (Tithonian)	Rosso Ammonitico Veronese Formation	Italy
Aulacostephanus camericensis^[6]	Sp. nov	Valid	Cope & Etches	Late Jurassic (Kimmeridgian)		United Kingdom
Baidites obesus^[7]	Sp. nov	Valid	Jattiot, Bucher & Brayard	Early Triassic		Indonesia
Boesites biconcavus^[3]	Sp. nov	Valid	Ehiro & Ozawa	Permian (Asselian)	Taishaku Limestone	Japan
Borissjakoceras falcatum^[8]	Sp. nov	Valid	Kennedy	Late Cretaceous (Cenomanian)		Tunisia	A member of the family Binneyitidae.
?Bouleiceras betetensis^[9]	Sp. nov	Valid	Martínez & Joral	Early Jurassic (Toarcian)		Spain	A member of the family Hildoceratidae.
Bouleiceras ibericum^[9]	Sp. nov	Valid	Martínez & Joral	Early Jurassic (Toarcian)		Spain	A member of the family Hildoceratidae.
Cagliceras baldii^[10]	Sp. nov	Valid	Kovács, Dunai & Evanics	Early Jurassic (Toarcian)		Hungary	A member of the family Erycitidae.
Cagliceras wegeneri^[10]	Sp. nov	Valid	Kovács, Dunai & Evanics	Early Jurassic (Toarcian)		Hungary	A member of the family Erycitidae.
Carthaginites elegans^[8]	Sp. nov	Valid	Kennedy	Late Cretaceous (Cenomanian)		Algeria	A member of the family Turrilitidae.
Churkites warei^[7]	Sp. nov	Valid	Jattiot, Bucher & Brayard	Early Triassic		Indonesia
Collignoniceras badilleti^[11]	Sp. nov	Valid	Amédro & Châtelier in Amédro et al.	Late Cretaceous (Turonian)		France
Collignoniceras hourqueigi^[11]	Sp. nov	Valid	Amédro & Châtelier in Amédro et al.	Late Cretaceous (Turonian)		France
Collignoniceras vigennum^[11]	Sp. nov	Valid	Amédro & Châtelier in Amédro et al.	Late Cretaceous (Turonian)		France
Conlinites evolutum^[8]	Sp. nov	Valid	Kennedy	Early Cretaceous (Albian)		Algeria	A member of the family Brancoceratidae.
Coquandiceras^[8]	Gen. et comb. nov	Valid	Kennedy	Late Cretaceous (Cenomanian)		Algeria Tunisia	A member of the family Acanthoceratidae belonging to the subfamily Mantelliceratinae. The type species is "Ammonites" jubae Coquand (1880); genus also includes "Ammonites" villei Coquand (1862).
Cryptoturrilites^[8]	Gen. et sp. nov	Valid	Kennedy	Late Cretaceous (Cenomanian)		Tunisia	A member of the family Turrilitidae. The type species is C. tenuicostatus.
Elobiceras (Craginites) simplex^[4]	Sp. nov	Valid	Kennedy in Gale & Kennedy	Early Cretaceous (Albian)	Lower Duck Creek	United States ( Texas)	A member of the family Brancoceratidae.
Elobiceras (Craginites) sparcicostatum^[4]	Sp. nov	Valid	Kennedy in Gale & Kennedy	Early Cretaceous (Albian)	Lower Duck Creek	United States ( Texas)	A member of the family Brancoceratidae.
Flemingites lidakensis^[7]	Sp. nov	Valid	Jattiot, Bucher & Brayard	Early Triassic		Indonesia
Goniatites abaiensis^[12]	Sp. nov	Valid	Korn et al.	Carboniferous (Viséan)	Baktysai Formation	Kazakhstan
Goniatites zhankurganensis^[12]	Sp. nov	Valid	Korn et al.	Carboniferous (Viséan)	Baktysai Formation	Kazakhstan
Graysonites elegans^[8]	Sp. nov	Valid	Kennedy	Late Cretaceous (Cenomanian)		Algeria	A member of the family Acanthoceratidae.
Gregoryceras boreale^[13]	Sp. nov	Valid	Mitta & Stupachenko	Late Jurassic (Oxfordian)		Russia	A member of the family Aspidoceratidae.
Hoevelia megalomanica^[14]	Sp. nov	Valid	Korn, Hairapetian & Gholamalian	Late Devonian		Iran
Homeomorphites^[15]	Gen. et sp. et comb. nov	Valid	Bert, Bersac & Canut	Early Cretaceous (Hauterivian to Barremian)		Argentina Chile	A member of the family Neocomitidae. The type species is H. aguirreurretae; genus also includes H. ploszkiewiczi (Riccardi and Aguirre-Urreta, 1989) and H. varicostatus (Riccardi and Aguirre-Urreta, 1989). Announced in 2019; the final version of the article naming was published in 2020.
Homoceratoides wangchengi^[16]	Sp. nov	Valid	Korn & Wang in Korn et al.	Carboniferous (Bashkirian)	Jingyuan Formation	China	A member of the family Bisatoceratidae. Announced in 2020; the final version of the article naming was published in 2021.
Hoploscaphites peterseni^[17]	Sp. nov	Valid	Landman et al.	Late Cretaceous	Bearpaw Shale Pierre Shale	United States ( Montana Wyoming)
Howarthiceras^[18]	Gen. et comb. nov	Valid	Zakharov & Rogov	Upper Jurassic (Tithonian)		United States ( California)	A new genus for "Groebericeras" baylei Imlay & Jones.
Hybonoticeras pseudoharpephorum^[5]	Sp. nov	Valid	Sarti	Late Jurassic (Tithonian)	Rosso Ammonitico Veronese Formation	Italy
Hypowaagenia^[19]	Gen. et sp. nov	Valid	Schweigert & Schlampp	Late Jurassic (Kimmeridgian)	Arzberg Formation	Germany Pakistan?	A member of the family Aspidoceratidae. The type species is H. endressi; genus might also include "Aspidoceras" acanthomphalum Zittel (1870).
Kosmoclymenia ebbighauseni^[20]	Sp. nov	Valid	Korn	Devonian (Famennian)		Morocco
Lasswitzia^[4]	Gen. et comb. nov	Valid	Kennedy in Gale & Kennedy	Early Cretaceous (Albian)	Lower Duck Creek Formation	United States ( Texas)	A member of the family Brancoceratidae. The type species is "Schloenbachia austinensis" Roemer var. minima Lasswitz (1904) (raised to the rank of a separate species Lasswitzia minima).
Lenicostites^[15]	Gen. et comb. nov	Valid	Bert, Bersac & Canut	Early Cretaceous (Barremian)		France	A member of Ancyloceratoidea belonging to the new family Lenicostitidae. The type species is "Hemihoplites" rusticus Vermeulen (1996). Announced in 2019; the final version of the article naming was published in 2020.
Lithacoceras főzyi^[5]	Sp. nov	Valid	Sarti	Late Jurassic (Tithonian)	Rosso Ammonitico Veronese Formation	Italy
Litophragmatoceras curiosus^[8]	Sp. nov	Valid	Kennedy	Late Cretaceous (Cenomanian)		Algeria	A member of the family Flickiidae.
Lytoceras pseudorsinii^[5]	Sp. nov	Valid	Sarti	Late Jurassic (Tithonian)	Rosso Ammonitico Veronese Formation	Italy
Marcouxia chaiburiensis^[21]	Sp. nov	Valid	Tongtherm et al.	Early Triassic	Chaiburi	Thailand
Margoceras^[22]	Gen. et sp. nov	Valid	Borissenkov	Permian (Cisuralian)		Russia ( Nenets Autonomous Okrug)	A member of the family Paragastrioceratidae. Genus includes new species M. boreale.
Mittaites^[23]	Gen. et comb. nov	Valid	Frau et al.	Early Cretaceous (Berriasian)		Russia	The type species is "Mazenoticeras" ceccai. Announced in 2020; the final version of the article naming it was published in 2021.
Mortoniceratoides elegans^[4]	Sp. nov	Valid	Kennedy in Gale & Kennedy	Early Cretaceous (Albian)	Kiamichi	United States ( Texas)	A member of the family Brancoceratidae.
Muessenbiaergia bockwinkeli^[20]	Sp. nov	Valid	Korn	Devonian (Famennian)		Morocco	A member of the family Kosmoclymeniidae.
Neophlycticeras algeriense^[8]	Sp. nov	Valid	Kennedy	Late Cretaceous (Cenomanian)		Algeria	A member of the family Lyelliceratidae.
Neophyllites lavernockensis^[24]	Sp. nov	Valid	Hodges	Early Jurassic (Hettangian)	White Lias Formation	United Kingdom	Announced in 2020; the final version of the article naming it was published in 2021.
Neotelodactylites^[25]	Gen. et comb. nov	Valid	Jattiot, Gris & Trincal	Early Jurassic (Toarcian)		France Italy	A new genus for "Peronoceras" eucosmum Lippi Boncambi (1947).
Neouddenites echiensis^[26]	Sp. nov	Valid	Kutygin	Permian		Russia ( Sakha)	A member of the family Medlicottiidae.
Paracraginites^[4]	Gen. et sp. nov	Valid	Kennedy in Gale & Kennedy	Early Cretaceous (Albian)	Lower Duck Creek	United States ( Texas)	A member of the family Brancoceratidae. The type species is P. conlini.
Paracrioceras giraudae^[27]	Sp. nov	Valid	Vermeulen et al.	Early Cretaceous		France
Paragastrioceras cantabrignianum^[22]	Sp. nov	Valid	Borissenkov	Permian (Cisuralian)		Russia ( Nenets Autonomous Okrug)	A member of the family Paragastrioceratidae.
Paraspidites bicarinatus^[7]	Sp. nov	Valid	Jattiot, Bucher & Brayard	Early Triassic		Indonesia
Paratornoceras ayense^[1]	Sp. nov	Valid	Korn & Buchwald in Korn et al.	Late Devonian
Paratornoceras harounense^[1]	Sp. nov	Valid	Korn & Ebbighausen in Korn et al.	Late Devonian
Paratornoceras peterseni^[1]	Sp. nov	Valid	Korn & Buchwald in Korn et al.	Late Devonian
Paratornoceras thuringense^[1]	Sp. nov	Valid	Korn, Bartzsch & Weyer in Korn et al.	Late Devonian
Pernaceras leroyi^[28]	Sp. nov	Valid	Vermeulen et al.	Early Cretaceous		France
Pervinquieria (Deiradoceras) serpentiforme^[4]	Sp. nov	Valid	Kennedy in Gale & Kennedy	Early Cretaceous (Albian)	Lower Duck Creek	United States ( Texas)	A member of the family Brancoceratidae.
Pervinquieria (Pervinquieria) asper^[4]	Sp. nov	Valid	Kennedy in Gale & Kennedy	Early Cretaceous (Albian)	Lower Duck Creek	United States ( Texas)	A member of the family Brancoceratidae.
Procrioceratites^[27]	Gen. et sp. et comb. nov	Valid	Vermeulen et al.	Early Cretaceous		France	A member of the family Crioceratitidae. The type species is P. etiennei; genus also includes P. primitivus (Reboulet, 1996) and P. barrabei (Sarkar, 1955).
Protacanthoceras sottaraense^[8]	Sp. nov	Valid	Kennedy	Late Cretaceous (Cenomanian)		Algeria	A member of the family Acanthoceratidae.
Protacanthodiscus guerrai^[5]	Sp. nov	Valid	Sarti	Late Jurassic (Tithonian)	Rosso Ammonitico Veronese Formation	Italy
Prouddenites evolutus^[26]	Sp. nov	Valid	Kutygin	Permian		Russia ( Sakha)	A member of the family Medlicottiidae.
Pseudodiscosphinctes pseudorhodanicus^[5]	Sp. nov	Valid	Caracuel & Sarti in Sarti	Late Jurassic (Tithonian)	Rosso Ammonitico Veronese Formation	Italy
Pseudolissoceras atesinum^[5]	Sp. nov	Valid	Sarti	Late Jurassic (Tithonian)	Rosso Ammonitico Veronese Formation	Italy
Pseudolongaeviceras^[29]	Gen. et sp. nov	Valid	Alifirov & Knyazev	Middle Jurassic (Callovian)		Russia	A member of the family Cardioceratidae. Genus includes new species P. densicostatum.
Pseudoxybeloceras simplex^[30]	Sp. nov	Valid	Kennedy	Late Cretaceous		United Kingdom
Ptychites embreei^[31]	Sp. nov	Valid	Bischof & Lehmann	Middle Triassic (Anisian)	Favret Formation	United States ( Nevada)
Reymenticoceras ornatum^[32]	Sp. nov	Valid	Kennedy	Late Cretaceous (Turonian)		Colombia	A member of the family Acanthoceratidae belonging to the subfamily Mammitinae. Announced in 2020; the final version of the article naming it was published in 2021.
Romaniceras (Romaniceras) marigniacum^[11]	Sp. nov	Valid	Amédro & Châtelier in Amédro et al.	Late Cretaceous (Turonian)		France
Roopnarinites^[7]	Gen. et comb. nov	Valid	Jattiot, Bucher & Brayard	Early Triassic		Indonesia	Genus includes "Meekoceras" paucesculptatum Welter (1922).
Scaphites occlusus^[8]	Sp. nov	Valid	Kennedy	Late Cretaceous (Cenomanian)		Algeria Tunisia	A member of the family Scaphitidae.
Schaireria (Schaireria) vetera^[5]	Sp. nov	Valid	Sarti	Late Jurassic (Tithonian)	Rosso Ammonitico Veronese Formation	Italy
Shumardites umbilicatus^[3]	Sp. nov	Valid	Ehiro & Ozawa	Permian (Asselian)	Taishaku Limestone	Japan
Sormaites^[33]	Gen. et sp. nov	Valid	Muramiya & Shigeta	Late Cretaceous (Turonian)		Japan	A member of the family Diplomoceratidae. Genus includes new species S. teshioensis.
Stoliczkaia (Stoliczkaia) djerissaensis^[8]	Sp. nov	Valid	Kennedy	Early Cretaceous (Albian)		Tunisia	A member of the family Lyelliceratidae.
Subflemingites bihatiense^[7]	Sp. nov	Valid	Jattiot, Bucher & Brayard	Early Triassic		Indonesia
Tescheniceras^[34]	Gen. et comb. nov	Valid	Vašíček	Early Cretaceous (Valanginian to Hauterivian)		Austria France Italy Morocco Romania Serbia Slovakia Spain Switzerland	A member of the family Neocomitidae. The type species is "Neocomites (Teschenites)" flucticulus Thieuloy (1977); genus also includes "Neocomites (Teschenites)" callidiscus Thieuloy (1971), "Teschenites" subflucticulus Reboulet (1996), "Neocomites (Teschenites)" pachydicranus Thieuloy (1977) and "Teschenites" subpachydicranus Reboulet (1996).
Tumaroceras paveli^[22]	Sp. nov	Valid	Borissenkov	Permian (Cisuralian)		Russia ( Nenets Autonomous Okrug)	A member of the family Paragastrioceratidae.
Vidrioceras ellipticum^[3]	Sp. nov	Valid	Ehiro & Ozawa	Permian (Asselian)	Taishaku Limestone	Japan
Virgatosimoceras propecostatum^[5]	Sp. nov	Valid	Sarti	Late Jurassic (Tithonian)	Rosso Ammonitico Veronese Formation	Italy
Yezoceras elegans^[35]	Sp. nov	Valid	Aiba, Karasawa & Iwasaki	Late Cretaceous (Coniacian)		Japan	A member of the family Nostoceratidae.

General research

A study aiming to determine the drag force experienced by a wide range of ammonite shell shapes is published by Hebdon, Ritterbush & Choi (2020).^[36]
A study evaluating how different parameters affected the ammonite shell's response to water pressure, aiming to determine whether the ammonite septa strengthened the shell against pressure at increasing water depths, is published by Lemanis (2020).^[37]^[38]^[39]
A study on global patterns of ammonite diversification and extinction from the Early Devonian (Emsian) to the Early Triassic (Induan) is published by Whalen, Hull & Briggs (2020).^[40]
A study on the abundance and size distribution of small specimens of Baculites and Hoploscaphites at eight cold methane seep sites in the Upper Cretaceous Pierre Shale (South Dakota, United States) is published by Rowe et al. (2020), who interpret their findings as indicating that newly hatched ammonites lived in close proximity to seep fluids emerging at the sediment-water interface and the associated microbial food web.^[41]
A study on changes of hydrostatic properties of three species of Didymoceras during their ontogeny is published by Peterman et al. (2020).^[42]

Other cephalopods

New taxa

Name	Novelty	Status	Authors	Age	Type locality	Country	Notes
Alexoceras^[43]	Gen. et sp. nov	Valid	Leonova & Shchedukhin	Early Permian		Russia ( Bashkortostan)	A nautiloid related to Temnocheilus. Genus includes new species A. mazaevi.
Ancistroceras ristnensis^[44]	Sp. nov	Valid	Aubrechtová & Meidla	Ordovician		Estonia
Ancistroceras vahikuelaensis^[44]	Sp. nov	Valid	Aubrechtová & Meidla	Ordovician		Estonia
Bairstowius amaliae^[45]	Sp. nov	Valid	Rita et al.	Early Jurassic (Pliensbachian)	Lemede	Portugal	A belemnite belonging to the family Hastitidae.
Barskoceras^[43]	Gen. et sp. nov	Valid	Leonova & Shchedukhin	Early Permian		Russia ( Bashkortostan)	A probable member of Oncocerida. Genus includes new species B. mirum.
Chromatoceras^[46]	Gen. et comb. nov	Valid	Turek & Manda	Silurian (Pridoli)	Kopanina	Czech Republic	A member of Oncocerida belonging to the family Oonoceratidae. The type species is "Cyrtoceras" veteranum Barrande (1866); genus also includes "Cyrtoceras" constringens Barrande (1866).
Domatoceras bashkiricum^[43]	Sp. nov	Valid	Leonova & Shchedukhin	Early Permian		Russia ( Bashkortostan)
Domatoceras sterlitamakense^[43]	Sp. nov	Valid	Leonova & Shchedukhin	Early Permian		Russia ( Bashkortostan)
Enigmabelus^[47]	Gen. et 3 sp. nov	Valid	Keupp & Fuchs	Early Jurassic (Pliensbachian)	Amaltheenton	Germany	A member of Belemnitina. Genus includes new species E. doppelsteini, E. micros and possibly ? E. leptos.
Houdongoceras^[48]	Gen. et sp. nov	Valid	Yang et al.	Permian Guadalupian	Gufeng Formation	China	A member of Orthocerida. Genus includes new species H. chaohuensis. Announced in 2020; the final version of the article naming it was published in 2021.
Leniceras^[43]	Gen. et sp. nov	Valid	Leonova & Shchedukhin	Early Permian		Russia ( Bashkortostan)	A nautiloid belonging to the family Liroceratidae. Genus includes new species L. ovale.
Liroceras shakhtauense^[43]	Sp. nov	Valid	Leonova & Shchedukhin	Early Permian		Russia ( Bashkortostan)	A nautiloid belonging to the family Liroceratidae.
Lituites nehatuensis^[44]	Sp. nov	Valid	Aubrechtová & Meidla	Ordovician		Estonia
Megaglossoceras barskovi^[43]	Sp. nov	Valid	Leonova & Shchedukhin	Early Permian		Russia ( Bashkortostan)	A nautiloid belonging to the family Ephippioceratidae.
Mosquoceras planum^[43]	Sp. nov	Valid	Leonova & Shchedukhin	Early Permian		Russia ( Bashkortostan)
Shatoceras^[43]	Gen. et sp. nov	Valid	Leonova & Shchedukhin	Early Permian		Russia ( Bashkortostan)	A nautiloid related to Domatoceras. Genus includes new species S. umbilicatum.
Shikhanonautilus^[43]	Gen. et sp. nov	Valid	Leonova & Shchedukhin	Early Permian		Russia ( Bashkortostan)	A nautiloid belonging to the family Liroceratidae. Genus includes new species S. siphonoventralis.
Sholakoceras formosum^[43]	Sp. nov	Valid	Leonova & Shchedukhin	Early Permian		Russia ( Bashkortostan)
Thyoceras^[43]	Gen. et sp. nov	Valid	Leonova & Shchedukhin	Early Permian		Russia ( Bashkortostan)	A nautiloid related to Permonautilus. Genus includes new species T. involutum.
Trematoceras watanabei^[49]	Sp. nov	Valid	Niko & Ehiro	Middle Triassic (Anisian)	Fukkoshi Formation	Japan

General research

A study aiming to determine whether the development of chamber volume in fossil cephalopod phragmocones conveys information about their physiology is published by Tajika et al. (2020), who evaluate the implications of their findings for the knowledge of the ecology and extinction selectivity of fossil cephalopods.^[50]
A study on the spatial distribution of Givetian oncocerid fossils from the Hamar Laghdad ridge (eastern Anti-Atlas, Morocco), evaluating its implications for the knowledge of the life cycle of these cephalopods, is published by Pohle et al. (2020).^[51]
Jurassic nautiloid Somalinautilus antiquus, previously known only from the Kimmeridgian strata of Ethiopia, is reported from the Kimmeridgian of Southern Germany by Schweigert (2020), who also reports the first finding of the species Somalinautilus clavifer the Middle Jurassic (Bathonian) of Southern Germany.^[52]
A study on the reproductive strategies of fossil coleoids, based on data from shells of belemnoids, spirulids and sepiids, is published by Fuchs et al. (2020).^[53]
A specimen of Plesioteuthis preserved with an associated tooth of a pterosaur is reported from the Upper Jurassic Altmühltal Formation (Germany) by Hoffmann et al. (2020), who evaluate the implications of this finding for the knowledge of the likely habitat of Plesioteuthis.^[54]

Gastropods

New taxa

Name	Novelty	Status	Authors	Age	Type locality	Country	Notes
Acanthinula karsdorfensis^[55]	Sp. nov	Valid	Kadolsky	Early Eocene		Germany	A species of Acanthinula sensu lato.
Acroloxus aspis^[55]	Sp. nov	Valid	Kadolsky	Early Eocene		Germany	A species of Acroloxus.
Acroloxus korys^[55]	Sp. nov	Valid	Kadolsky	Early Eocene		Germany	A species of Acroloxus.
"Acteon" distinctus^[56]	Sp. nov	Valid	Landau, Ceulemans & Van Dingenen	Miocene (Tortonian)		France
Afrodontops^[55]	Gen. et 2 sp. nov	Valid	Kadolsky	Early Eocene		Germany	A member of the family Charopidae. The type species is A. europaea; genus also includes A. comes.
Alanstukella^[57]	Gen. et comb. nov	Valid	Mazaev	Carboniferous (Kasimovian) to Permian (Sakmarian)		Russia	A member of the family Trochonematidae. The type species is A. rossica (Stuckenberg, 1905).
Albinulopsis^[55]	Gen. et sp. et comb. nov	Valid	Kadolsky	Eocene		France Germany	A member of the family Gastrocoptidae. The type species is A. gibba; genus also includes "Pupa" bonneti Cossmann (1907).
Altotomaria^[58]	Gen. et sp. nov	Valid	Ketwetsuriya et al.	Permian (Roadian)	Khao Khad Formation	Thailand	Genus includes new species A. reticulata.
Ammonicera oliveri^[56]	Sp. nov	Valid	Landau, Ceulemans & Van Dingenen	Miocene (Tortonian)		France	A species of Ammonicera.
Andonia delgadoi^[59]	Sp. nov	Valid	Landau, Van Dingenen & Ceulemans	Miocene (Tortonian)		France
Andonia wilhelminamariae^[60]	Sp. nov	Valid	Landau & Mulder	Pliocene		Italy Spain
Anomphalus murankaensis^[61]	Sp. nov	Valid	Mazaev	Permian (Sakmarian)		Russia
Apachella noinskyi^[61]	Sp. nov	Valid	Mazaev	Permian (Sakmarian)		Russia
Apachella thailandensis^[58]	Sp. nov	Valid	Ketwetsuriya et al.	Permian (Roadian)	Khao Khad Formation	Thailand
Aphanitoma roesti^[59]	Sp. nov	Valid	Landau, Van Dingenen & Ceulemans	Miocene (Tortonian)		France	A species of Aphanitoma.
Aquitanobursa javana^[62]	Sp. nov	Valid	Landau et al.	Miocene		Indonesia	A member of the family Bursidae.
Assiminea striatura^[63]	Sp. nov	Valid	Bullis et al.	Late Cretaceous (Cenomanian)	Burmese amber	Myanmar	A species of Assiminea.
Auristomia insulsa^[64]	Sp. nov	Valid	Landau et al.	Miocene (Tortonian)		France	A species of Auristomia.
Bactrocythara pascaleae^[59]	Sp. nov	Valid	Landau, Van Dingenen & Ceulemans	Miocene (Tortonian)		France	A species of Bactrocythara.
Balticopta^[65]	Gen. et sp. nov	Valid	Balashov & Perkovsky	Eocene (Priabonian)	Baltic amber	Russia ( Kaliningrad Oblast)	A member of the family Gastrocoptidae. The type species is B. gusakovi.
Bania goehlichae^[66]	Sp. nov	Valid	Mandic, Harzhauser & Neubauer	Middle Miocene		Bosnia and Herzegovina
Bela henkmulderi^[59]	Sp. nov	Valid	Landau, Van Dingenen & Ceulemans	Miocene (Tortonian)		France	A species of Bela.
Bela keukelaari^[59]	Sp. nov	Valid	Landau, Van Dingenen & Ceulemans	Miocene (Tortonian)		France	A species of Bela.
Bela pseudomegastoma^[59]	Sp. nov	Valid	Landau, Van Dingenen & Ceulemans	Miocene (Tortonian)		France	A species of Bela.
Bela pseudovulpecula^[59]	Sp. nov	Valid	Landau, Van Dingenen & Ceulemans	Miocene (Tortonian)		France	A species of Bela.
Bela redoniana^[59]	Sp. nov	Valid	Landau, Van Dingenen & Ceulemans	Miocene (Tortonian)		France	A species of Bela.
Bela scarponii^[59]	Sp. nov	Valid	Landau, Van Dingenen & Ceulemans	Miocene (Tortonian)		France	A species of Bela.
Bela sceauxensis^[59]	Sp. nov	Valid	Landau, Van Dingenen & Ceulemans	Miocene (Tortonian)		France	A species of Bela.
Belgrandiella? nichterli^[67]	Sp. nov	Valid	Harzhauser et al.	Late Eocene		Spain	Possibly a species of Belgrandiella.
Bellerophon erawanensis^[58]	Sp. nov	Valid	Ketwetsuriya et al.	Permian (Roadian)	Khao Khad Formation	Thailand
Biarmeaspira mazaevi^[58]	Sp. nov	Valid	Ketwetsuriya et al.	Permian (Roadian)	Khao Khad Formation	Thailand
Buccinaria minuscula^[59]	Sp. nov	Valid	Landau, Van Dingenen & Ceulemans	Miocene (Tortonian)		France	A species of Buccinaria.
Calculocochlea^[68]	Gen. et sp. nov	Valid	Juárez-Ruiz, Matamales-Andreu & Kadolsky	Early Oligocene		Spain	A member of the family Vidaliellidae. Genus includes new species C. oliveri.
Callitrochilia^[69]	Gen. et comb. nov	Valid	Gain, Belliard & Le Renard	Eocene		France	A member of the family Calliostomatidae. The type species is "Calliostoma (Eutrochus)" ditropis Cossmann & Pissarro (1902).
Calogoniodiscus pyrenaicus^[67]	Sp. nov	Valid	Harzhauser et al.	Late Eocene		Spain
Campanile madagasikara^[70]	Sp. nov		Pacaud	Late Miocene		Madagascar	A species of Campanile.
Careliopsis gallica^[64]	Sp. nov	Valid	Landau et al.	Miocene (Tortonian)		France	A species of Careliopsis.
Carychiopsina^[55]	Gen. et comb. nov	Valid	Kadolsky	Late Oligocene and early Miocene		Czech Republic Poland	A member of the family Ellobiidae belonging to the subfamily Carychiinae. The type species is "Pupa" schwageri Reuss (1868); genus also includes C. costulata (Sandberger, 1862), C. prisyazhnyuki (Stworzewicz, 1999) and possibly C.? surai (Stworzewicz, 1999).
Carychium bachi^[55]	Sp. nov	Valid	Kadolsky	Early Eocene		Germany	A species of Carychium.
Carychium vagum^[55]	Sp. nov	Valid	Kadolsky	Early Eocene		Germany	A species of Carychium.
Casmaria primitiva^[62]	Sp. nov	Valid	Landau et al.	Miocene		Indonesia	A species of Casmaria.
Cassis robusta^[62]	Sp. nov	Valid	Landau et al.	Miocene		Indonesia	A species of Cassis.
Cassitriton^[71]	Gen. et sp. nov	Valid	Craig & Tracey in Craig et al.	Eocene (Lutetian)		France	A member of the family Cymatiidae. The type species is C. magnificus Craig, Tracey & Gain.
Cataegis ramosi^[72]	Sp. nov	Valid	Kiel, Aguilar & Kase	Late Pliocene	Bata Formation	Philippines	A species of Cataegis.
Cheilospicata cedrus^[73]	Sp. nov	Valid	Garvie in Garvie, Goedert & Janssen			United States
Chemnitzia miogallica^[64]	Sp. nov	Valid	Landau et al.	Miocene (Tortonian)		France	A species of Chemnitzia.
Chemnitzia robusticostata^[64]	Sp. nov	Valid	Landau et al.	Miocene (Tortonian)		France	A species of Chemnitzia.
Chilodonta tricostatula^[74]	Sp. nov	Valid	Gründel, Hostettler & Gfeller	Late Jurassic (Oxfordian)	St-Ursanne-Formation	Switzerland	A species of Chilodonta.
Clanculus (Clanculopsis) krachi^[75]	Sp. nov	Valid	Nosowska	Middle Miocene		Poland Ukraine	A species of Clanculus.
Clathrella semilaeve^[64]	Sp. nov	Valid	Landau et al.	Miocene (Tortonian)		France
Clathromangelia daisyae^[59]	Sp. nov	Valid	Landau, Van Dingenen & Ceulemans	Miocene (Tortonian)		France	A species of Clathromangelia.
Clathromangelia densecostata^[59]	Sp. nov	Valid	Landau, Van Dingenen & Ceulemans	Miocene (Tortonian)		France	A species of Clathromangelia.
Clathromangelia hakkennesi^[59]	Sp. nov	Valid	Landau, Van Dingenen & Ceulemans	Miocene (Tortonian)		France	A species of Clathromangelia.
Clathromangelia helwerdae^[59]	Sp. nov	Valid	Landau, Van Dingenen & Ceulemans	Miocene (Tortonian)		France	A species of Clathromangelia.
Clathromangelia karinneae^[59]	Sp. nov	Valid	Landau, Van Dingenen & Ceulemans	Miocene (Tortonian)		France	A species of Clathromangelia.
Clathromangelia pereirae^[59]	Sp. nov	Valid	Landau, Van Dingenen & Ceulemans	Miocene (Tortonian)		France	A species of Clathromangelia.
Clathromangelia vannieulandei^[59]	Sp. nov	Valid	Landau, Van Dingenen & Ceulemans	Miocene (Tortonian)		France	A species of Clathromangelia.
Clathromangelia wopkeae^[59]	Sp. nov	Valid	Landau, Van Dingenen & Ceulemans	Miocene (Tortonian)		France	A species of Clathromangelia.
Clavatula sceauxensis^[59]	Sp. nov	Valid	Landau, Van Dingenen & Ceulemans	Miocene (Tortonian)		France	A species of Clavatula.
Clio gailae^[73]	Sp. nov	Valid	Goedert & Janssen in Garvie, Goedert & Janssen			United States ( Washington)	A species of Clio.
Cochleochilus? spiralocostatus^[74]	Sp. nov	Valid	Gründel, Hostettler & Gfeller	Late Jurassic (Oxfordian)	St-Ursanne-Formation	Switzerland	Possibly a member of the family Ataphridae.
Coenaculum boucheti^[56]	Sp. nov	Valid	Landau, Ceulemans & Van Dingenen	Miocene (Tortonian)		France	A species of Coenaculum.
Cryptochorda altavesna^[76]	Sp. nov	Valid	Pacaud & Sautereau	Eocene (Lutetian)		France	A member of the family Harpidae.
Cryptochorda cosediensis^[76]	Sp. nov	Valid	Pacaud & Sautereau	Eocene (Lutetian))		France	A member of the family Harpidae.
Cryptochorda neptis^[76]	Sp. nov	Valid	Pacaud & Sautereau	Eocene (Ypresian))		France	A member of the family Harpidae.
Currylimacina asperita^[73]	Sp. nov	Valid	Garvie in Garvie, Goedert & Janssen			United States
Cypraecassis minirufa^[62]	Sp. nov	Valid	Landau et al.	Miocene		Indonesia	A species of Cypraecassis.
Cyrillia michalidesi^[59]	Sp. nov	Valid	Landau, Van Dingenen & Ceulemans	Miocene (Tortonian)		France	A species of Cyrillia.
Daphnella groeneveldi^[59]	Sp. nov	Valid	Landau, Van Dingenen & Ceulemans	Miocene (Tortonian)		France	A species of Daphnella.
Donaldina sakmaraensis^[61]	Sp. nov	Valid	Mazaev	Permian (Sakmarian)		Russia
Ebala ornatissima^[56]	Sp. nov	Valid	Landau, Ceulemans & Van Dingenen	Miocene (Tortonian)		France	A species of Ebala.
Emarginula rara^[74]	Sp. nov	Valid	Gründel, Hostettler & Gfeller	Late Jurassic (Oxfordian)	St-Ursanne-Formation	Switzerland	A species of Emarginula.
Enneopupa priabonica^[67]	Sp. nov	Valid	Harzhauser et al.	Late Eocene		Spain
Eoconus cambieni^[59]	Sp. nov	Valid	Landau, Van Dingenen & Ceulemans	Miocene (Tortonian)		France
Eoconus vanhoutenae^[59]	Sp. nov	Valid	Landau, Van Dingenen & Ceulemans	Miocene (Tortonian)		France
Eofavartia dharmai^[77]	Sp. nov	Valid	Merle & Landau	Middle Miocene		Indonesia	A member of the family Muricidae.
Eohispania^[67]	Gen. et sp. nov	Valid	Harzhauser et al.	Late Eocene		Spain	Genus includes new species E. dominicii.
Eotrichophorus^[63]	Gen. et sp. nov	Valid	Bullis et al.	Late Cretaceous (Cenomanian)	Burmese amber	Myanmar	A member of the family Cyclophoridae. Genus includes new species E. kachin.
Erato crassus^[78]	Sp. nov	Valid	Fehse	Miocene		France	A species of Erato.
Erato fragilis^[78]	Sp. nov	Valid	Fehse	Miocene		France	A species of Erato.
Erato pinguis^[78]	Sp. nov	Valid	Fehse	Miocene		France	A species of Erato.
Erato princeps^[78]	Sp. nov	Valid	Fehse	Miocene		France	A species of Erato.
Erato prokimakowiczi^[78]	Sp. nov	Valid	Fehse	Miocene		France	A species of Erato.
Erato quasiplanulosa^[78]	Sp. nov	Valid	Fehse	Miocene		France	A species of Erato.
Erato tenuipustulata^[78]	Sp. nov	Valid	Fehse	Miocene		France	A species of Erato.
Eulimella redoniana^[64]	Sp. nov	Valid	Landau et al.	Miocene (Tortonian)		France	A species of Eulimella.
Eulimella semilaeve^[64]	Sp. nov	Valid	Landau et al.	Miocene (Tortonian)		France	A species of Eulimella.
Eusassia^[71]	Gen. et comb. nov	Valid	Craig & Tracey in Craig et al.	Eocene		France	A member of the family Cymatiidae. The type species is "Triton (Lampusia)" chalmasi Vasseur (1882); genus also includes "Eutritonium (Sassia)" dubusi Cossmann & Pissarro (1905).
Euthema annae^[79]	Sp. nov	In press	Balashov	Late Cretaceous (Cenomanian)	Burmese amber	Myanmar	A species of Euthema.
Euthema truncatellina^[80]	Sp. nov	Valid	Balashov, Perkovsky & Vasilenko	Late Cretaceous (Cenomanian)	Burmese amber	Myanmar	A species of Euthema.
Euthriofusus postumus^[60]	Sp. nov	Valid	Landau & Mulder	Pliocene		Spain
Freboldia carinii^[81]	Sp. nov	Valid	Pieroni & Nützel	Middle Triassic	Esino Limestone	Italy
Fusulculus hanseni^[82]	Nom. nov	Valid	Pacaud	Early Paleocene		Denmark	A species of Fusulculus; a replacement name for Epalxis ? rosenkrantzi Hansen (2019).
Gosseletina microstriata^[58]	Sp. nov	Valid	Ketwetsuriya et al.	Permian (Roadian)	Khao Khad Formation	Thailand	A member of the family Gosseletinidae. Originally described as a species of Gosseletina; Mazaev (2021) transferred it to the genus Nemaspira.^[83]
Haedropleura brebioni^[59]	Sp. nov	Valid	Landau, Van Dingenen & Ceulemans	Miocene (Tortonian)		France	A species of Haedropleura.
Haedropleura gallica^[59]	Sp. nov	Valid	Landau, Van Dingenen & Ceulemans	Miocene (Tortonian)		France	A species of Haedropleura.
Haedropleura ligeriana^[59]	Sp. nov	Valid	Landau, Van Dingenen & Ceulemans	Miocene (Tortonian)		France	A species of Haedropleura.
Headonia^[67]	Gen. et comb. nov	Valid	Harzhauser et al.	Late Eocene	Headon Hill Formation	France United Kingdom	The type species is "Planorbis" euomphalus Sowerby (1816)
Heliconoides hodgkinsoni^[73]	Sp. nov	Valid	Garvie in Garvie, Goedert & Janssen			United States
Helvetataphrus^[74]	Gen. et comb. nov	Valid	Gründel, Hostettler & Gfeller	Late Jurassic (Oxfordian)	St-Ursanne-Formation	France Switzerland	A member of the family Ataphridae. The type species is "Turbo" subrugosus Buvignier (1852).
Heterogen praelongispira^[84]	Sp. nov	Valid	Matsuoka & Hirano	Pleistocene	Katata Formation	Japan	A species of Heterogen.
Heterosubulites longusapertura^[58]	Sp. nov	Valid	Ketwetsuriya et al.	Permian (Roadian)	Khao Khad Formation	Thailand
Incisilabium trochiformis^[85]	Sp. nov	Valid	Lozouet, Cahuzac & Charles	Eocene (Priabonian)		France	A member of the family Modulidae.
Ividella tuberculata^[64]	Sp. nov	Valid	Landau et al.	Miocene (Tortonian)		France	A member of the family Pyramidellidae. Originally described as a species of Ividella, but subsequently transferred to the genus Mulderia.^[86]
Katosira ? bicarinata^[87]	Sp. nov	Valid	Ferrari, Little & Atkinson	Early Jurassic (Toarcian)	Blea Wyke Sandstone Formation	United Kingdom	A member of the family Zygopleuridae.
Klavlia minuta^[61]	Sp. nov	Valid	Mazaev	Permian (Sakmarian)		Russia
Laminifera nannodes^[67]	Sp. nov	Valid	Harzhauser et al.	Late Eocene		Spain
Laxecostula^[67]	Gen. et comb. nov	Valid	Harzhauser et al.	Eocene (Lutetian)	Bouxwiller Formation	France	Genus includes "Helix" laxecostulata Sandberger (1871).
Leufroyia annegienae^[59]	Sp. nov	Valid	Landau, Van Dingenen & Ceulemans	Miocene (Tortonian)		France	A species of Leufroyia.
Leufroyia hesseli^[59]	Sp. nov	Valid	Landau, Van Dingenen & Ceulemans	Miocene (Tortonian)		France	A species of Leufroyia.
Leufroyia ligeriana^[59]	Sp. nov	Valid	Landau, Van Dingenen & Ceulemans	Miocene (Tortonian)		France	A species of Leufroyia.
Leufroyia renauleauensis^[59]	Sp. nov	Valid	Landau, Van Dingenen & Ceulemans	Miocene (Tortonian)		France	A species of Leufroyia.
Leufroyia riccardoi^[59]	Sp. nov	Valid	Landau, Van Dingenen & Ceulemans	Miocene (Tortonian)		France	A species of Leufroyia.
Leufroyia seani^[59]	Sp. nov	Valid	Landau, Van Dingenen & Ceulemans	Miocene (Tortonian)		France	A species of Leufroyia.
Limacina parvabrazensis^[73]	Sp. nov	Valid	Garvie & Janssen in Garvie, Goedert & Janssen			United States	A species of Limacina.
Limacina pseudopygmaea^[73]	Sp. nov	Valid	Garvie & Janssen in Garvie, Goedert & Janssen			United States	A species of Limacina.
Limacina texanopsis^[73]	Sp. nov	Valid	Garvie in Garvie, Goedert & Janssen			United States	A species of Limacina.
Limacina yadongensis^[88]	Sp. nov	Valid	Li et al.	Early Eocene	Zhepure Formation	China	A species of Limacina.
Loriolotrema^[89]	Gen. et sp. nov	Valid	Gründel, Hostettler & Menkveld-Gfeller	Late Jurassic		Switzerland	A member of the family Brachytrematidae. Genus includes new species L. liriola.
Lozouetina naonedosca^[90]	Sp. nov	Valid	Pacaud & Gómez	Eocene (Bartonian)		France Spain	A member of the family Ovulidae belonging to the subfamily Pediculariinae.
Macromphalina alinemulderae^[60]	Sp. nov	Valid	Landau & Mulder	Pliocene		Spain	A species of Macromphalina.
Macropupina^[63]	Gen. et sp. nov	Valid	Bullis et al.	Late Cretaceous (Cenomanian)	Burmese amber	Myanmar	A member of the family Pupinidae. Genus includes new species M. electricus.
Mangelia burgersae^[59]	Sp. nov	Valid	Landau, Van Dingenen & Ceulemans	Miocene (Tortonian)		France	A species of Mangelia.
Margarites hayashii^[72]	Sp. nov	Valid	Kiel, Aguilar & Kase	Late Pliocene	Bata Formation	Philippines	A species of Margarites.
Megastomia pseudopolysarcula^[64]	Sp. nov	Valid	Landau et al.	Miocene (Tortonian)		France	A species of Megastomia.
Menestho bertieae^[64]	Sp. nov	Valid	Landau et al.	Miocene (Tortonian)		France	A species of Menestho.
Microsassia^[71]	Gen. et sp. nov	Valid	Craig & Tracey in Craig et al.	Eocene (Lutetian)		France	A member of the family Cymatiidae. The type species is M. inconspicua Craig & Tracey.
Microtriton^[71]	Gen. et 2 sp. et comb. nov	Valid	Craig & Tracey in Craig et al.	Eocene		France	A member of the family Cymatiidae. The type species is M. biplicoides Craig & Tracey; genus also includes new species M. dollfusi Craig & Tracey, as well as "Lampusia (Simpulum)" bourdoti Cossmann (1897).
Mitromorpha mulderi^[59]	Sp. nov	Valid	Landau, Van Dingenen & Ceulemans	Miocene (Tortonian)		France	A species of Mitromorpha.
Modulus benoisti^[85]	Sp. nov	Valid	Lozouet, Cahuzac & Charles	Miocene (Serravallian)		France	A species of Modulus.
Moelleria jansseni^[91]	Sp. nov	Valid	Hoeksema, Rijken & Simons	Pleistocene		France	A species of Moelleria.
Monoplex dissimilis^[62]	Sp. nov	Valid	Landau et al.	Miocene		Indonesia	A species of Monoplex.
Monoplex gradatus^[71]	Sp. nov	Valid	Craig, Tracey & Gain in Craig et al.	Eocene		France	A species of Monoplex.
Nassitriton^[71]	Gen. et sp. nov	Valid	Craig & Tracey in Craig et al.	Eocene		France	A member of the family Cymatiidae. The type species is N. conicus Craig, Tracey & Le Renard; genus might also include "Lampusia (Sassia)" lennieri Cossmann & Pissarro (1901).
Naticopsis sokensis^[61]	Sp. nov	Valid	Mazaev	Permian (Sakmarian)		Russia
Nemdaella usensis^[61]	Sp. nov	Valid	Mazaev	Permian (Sakmarian)		Russia
Neniopsilla^[67]	Gen. et sp. nov	Valid	Harzhauser et al.	Late Eocene		Spain	Genus includes new species N. amoena.
Neritopsis brasili^[92]	Sp. nov	Valid	Symonds, Gain & Le Renard	Eocene		France	A species of Neritopsis.
Neritopsis toddi^[92]	Sp. nov	Valid	Symonds, Gain & Le Renard	Eocene		France	A species of Neritopsis.
Niveria ledoni^[93]	Sp. nov	Valid	Fehse & Vicián	Late Miocene		France	A species of Niveria.
Niveria miocarinata^[93]	Sp. nov	Valid	Fehse & Vicián	Late Miocene		France	A species of Niveria.
Ocinebrina bertai^[94]	Sp. nov	Valid	Kovács	Middle Miocene		Hungary	A species of Ocinebrina.
Odostomia fortistriata^[64]	Sp. nov	Valid	Landau et al.	Miocene (Tortonian)		France	A species of Odostomia.
Odostomia miopupa^[64]	Nom. nov	Valid	Landau et al.			France	A species of Odostomia; a replacement name for Odontostomia rissoides var. pupa Gougerot (1969).
Odostomia robustissima^[64]	Sp. nov	Valid	Landau et al.	Miocene (Tortonian)		France	A species of Odostomia.
Ovicarychium^[55]	Gen. et 2 sp. et comb. nov	Valid	Kadolsky	Eocene		France Germany	A member of the family Ellobiidae belonging to the subfamily Carychiinae. The type species is O. ronlederi; genus also includes new species O.hennigeri, as well as O. bigeminatum (Deshayes, 1863), O. carbonarium (Wenz, 1932), O. interferens (Deshayes, 1863), O. polysarcum (Cossmann, 1914), O. quadridens(Andreae, 1884), O. remiense (Boissy, 1848) and O. sparnacense (Deshayes, 1863).
Oxfordina^[74]	Gen. et comb. nov	Valid	Gründel, Hostettler & Gfeller	Late Jurassic (Oxfordian)	St-Ursanne-Formation	Switzerland	A member of the family Eucyclidae. The type species is "Trochus" crassicosta Buvignier (1852).
Palaeostoa costellata^[55]	Sp. nov	Valid	Kadolsky	Early Eocene		Germany	A member of the family Palaeostoidae.
Paleodiplommatina^[63]	Gen. et sp. nov	Disputed	Bullis et al.	Late Cretaceous (Cenomanian)	Burmese amber	Myanmar	A member of the family Diplommatinidae. Genus includes new species P. spelomphalos. Considered to be a junior synonym of the genus Euthema by Balashov (2020).^[79]
Paracraticula? catalaunica^[67]	Sp. nov	Valid	Harzhauser et al.	Late Eocene		Spain
Parasassia^[71]	Gen. et comb. et 2 sp. nov	Valid	Craig & Tracey in Craig et al.	Eocene		France	A member of the family Cymatiidae. The type species is "Triton" multigraniferum Deshayes (1835); genus also includes "Triton" bicinctum Deshayes (1835), "Triton" dumortieri Baudon (1853), "Lampusia (Simpulum)" polysarca Cossmann & Pissarro (1901), "Lampusia (Simpulum)" pustulifera Cossmann & Pissarro (1901) and "Murex" reticulosus Lamarck (1803), as well as new species P. globosa Craig & Tracey and P. polysarcoides Craig & Tracey.
Parthenina brebioni^[64]	Sp. nov	Valid	Landau et al.	Miocene (Tortonian)		France	A species of Parthenina.
Parthenina chauvereauensis^[64]	Sp. nov	Valid	Landau et al.	Miocene (Tortonian)		France	A species of Parthenina.
Parthenina clementiensis^[64]	Sp. nov	Valid	Landau et al.	Miocene (Tortonian)		France	A species of Parthenina.
Parthenina lamellata^[64]	Sp. nov	Valid	Landau et al.	Miocene (Tortonian)		France	A species of Parthenina.
Parthenina ligeriana^[64]	Sp. nov	Valid	Landau et al.	Miocene (Tortonian)		France	A species of Parthenina.
Parthenina milleti^[64]	Sp. nov	Valid	Landau et al.	Miocene (Tortonian)		France	A species of Parthenina.
Parthenina pouweri^[64]	Sp. nov	Valid	Landau et al.	Miocene (Tortonian)		France	A species of Parthenina.
Parthenina redoniana^[64]	Sp. nov	Valid	Landau et al.	Miocene (Tortonian)		France	A species of Parthenina.
Parthenina sceauxensis^[64]	Sp. nov	Valid	Landau et al.	Miocene (Tortonian)		France	A species of Parthenina.
Parthenina tenuicostata^[64]	Sp. nov	Valid	Landau et al.	Miocene (Tortonian)		France	A species of Parthenina.
Parthenina wesselinghi^[64]	Sp. nov	Valid	Landau et al.	Miocene (Tortonian)		France	A species of Parthenina.
Patella staceata^[74]	Sp. nov	Valid	Gründel, Hostettler & Gfeller	Late Jurassic (Oxfordian)	St-Ursanne-Formation	Switzerland	A species of Patella.
Perissocyclos^[63]	Gen. et sp. nov	Valid	Bullis et al.	Late Cretaceous (Cenomanian)	Burmese amber	Myanmar	A member of the family Cyclophoridae. Genus includes new species P. kyrtostoma.
Peruvispira brasilensis^[95]	Sp. nov	In press	Simões et al.	Late Paleozoic	Taciba Formation	Brazil
Planitriton^[71]	Gen. et comb. nov	Valid	Craig & Tracey in Craig et al.	Eocene	Calcaire Grossier d'Etrechy	France	A member of the family Cymatiidae. The type species is "Triton" planicostatum Deshayes (1835).
Platyzona gradata^[58]	Sp. nov	Valid	Ketwetsuriya et al.	Permian (Roadian)	Khao Khad Formation	Thailand
Pleurotomaria pogibshiensis^[96]	Sp. nov	Valid	Ferrari et al.	Early Jurassic (Hettangian)	Pogibshi Formation	United States ( Alaska)
Pleurotomoides barnardi^[59]	Sp. nov	Valid	Landau, Van Dingenen & Ceulemans	Miocene (Tortonian)		France
Pleurotomoides vanderdoncki^[59]	Sp. nov	Valid	Landau, Van Dingenen & Ceulemans	Miocene (Tortonian)		France
Praealaerato venusta^[78]	Sp. nov	Valid	Fehse	Miocene		France	A member of the family Eratoidae.
Profundimitra lacuiensis^[97]	Nom. nov	Valid	Nielsen & Ampuero	Early Miocene		Chile	A species of Profundimitra; a replacement name for Mitra martini Philippi (1887).
Prososthenia krijgsmani^[66]	Sp. nov	Valid	Mandic, Harzhauser & Neubauer	Middle Miocene		Bosnia and Herzegovina
Prososthenia milosevici^[98]	Sp. nov	Valid	Neubauer et al.	Miocene		Serbia	A member of the family Hydrobiidae belonging to the subfamily Pyrgulinae.
Prososthenia? naissensis^[98]	Sp. nov	Valid	Neubauer et al.	Miocene		Serbia	A member of the family Hydrobiidae belonging to the subfamily Pyrgulinae.
Prososthenia rundici^[98]	Sp. nov	Valid	Neubauer et al.	Miocene		Serbia	A member of the family Hydrobiidae belonging to the subfamily Pyrgulinae.
Protocharonia^[71]	Gen. et comb. nov	Valid	Craig & Tracey in Craig et al.	Eocene		France	A member of the family Charoniidae. The type species is "Triton" formosum Deshayes (1865); genus also includes "Eutritonium (Sassia) gouetense" var. semitextum Cossmann (1919).
Protoplex^[71]	Gen. et sp. et comb. nov	Valid	Craig & Tracey in Craig et al.	Eocene		France United Kingdom	A member of the family Cymatiidae. The type species is P. gervillei Craig & Tracey; genus also includes "Murex" nodularius Lamarck (1803), "Sassia" websteri Wrigley (1932) and "Sassia" biserialis Wrigley (1932).
Provanna azurini^[72]	Sp. nov	Valid	Kiel, Aguilar & Kase	Late Pliocene	Bata Formation	Philippines	A species of Provanna.
Pseudangaria^[74]	Gen. et comb. nov	Valid	Gründel, Hostettler & Gfeller	Late Jurassic (Oxfordian)	St-Ursanne-Formation	Switzerland	A member of the family Angariidae. The type species is "Delphinula" kobyi De Loriol in De Loriol & Koby (1895).
Pseudoneptunea constantinensis^[99]	Sp. nov	Valid	Gain & Belliard	Eocene		France
Pseudoneptunea prima^[99]	Sp. nov	Valid	Gain & Belliard	Paleocene (Thanetian)		France
Pseudoneptunea trinodularia^[99]	Sp. nov	Valid	Gain & Belliard	Eocene		France
Pseudoscilla breitenbergeri^[64]	Sp. nov	Valid	Landau et al.	Miocene (Tortonian)		France	A species of Pseudoscilla.
Pseudotectonica^[67]	Gen. et sp. nov	Valid	Harzhauser et al.	Late Eocene		Spain	Genus includes new species P. pulchra.
Pyrgulina cancellatissima^[64]	Sp. nov	Valid	Landau et al.	Miocene (Tortonian)		France	A species of Pyrgulina.
Pyrgulina presselierensis^[64]	Sp. nov	Valid	Landau et al.	Miocene (Tortonian)		France	A species of Pyrgulina.
Raphitoma breitenbergeri^[59]	Sp. nov	Valid	Landau, Van Dingenen & Ceulemans	Miocene (Tortonian)		France	A species of Raphitoma.
Raphitoma dellabellaorum^[59]	Sp. nov	Valid	Landau, Van Dingenen & Ceulemans	Miocene (Tortonian)		France	A species of Raphitoma.
Raphitoma soniusae^[59]	Sp. nov	Valid	Landau, Van Dingenen & Ceulemans	Miocene (Tortonian)		France	A species of Raphitoma.
Raphitoma vogeli^[59]	Sp. nov	Valid	Landau, Van Dingenen & Ceulemans	Miocene (Tortonian)		France	A species of Raphitoma.
Rimula lobilloensis^[60]	Sp. nov	Valid	Landau & Mulder	Pliocene		Spain	A species of Rimula.
Rimulopsis torulosus^[74]	Sp. nov	Valid	Gründel, Hostettler & Gfeller	Late Jurassic (Oxfordian)	St-Ursanne-Formation	Switzerland	A member of the family Fissurellidae.
Rotatrigonostoma^[100]	Gen. et sp. et comb. nov	Valid	Landau, Breitenberger & Harzhauser	Miocene		Austria Romania	A member of the family Cancellariidae. Genus includes new species R. reinholdkunzi, as well as "Pseudomalaxis" boettgeri Cossmann (1916).
Sassiella^[71]	Gen. et 11 sp. et comb. nov	Valid	Craig & Tracey in Craig et al.	Eocene		France	A member of the family Cymatiidae. The type species is S. lacertina Craig & Tracey; genus also includes new species S. angulata Craig & Tracey, S. bacata Craig & Tracey, S. caputdraconis Craig & Tracey, S. crassilabrum Craig & Tracey, S. decussata Craig & Tracey, S. multivittata Craig & Tracey, S. puncticarinata Craig & Tracey, S. radulfivillensis Craig & Tracey, S. scalaris Craig & Tracey and S. vincta Craig & Tracey, as well as "Murex" colubrinus Lamarck (1803) and "Lampusia (Simpulum) polyzonalis" var. parameces Cossmann & Pissarro (1901).
Schilderina charlesi^[101]	Sp. nov	Valid	Dolin & Aguerre	Miocene		France	A member of the family Cypraeidae.
Schilderina vaesseni^[101]	Sp. nov	Valid	Dolin & Aguerre	Miocene		France	A member of the family Cypraeidae.
Scissurella nesbittae^[102]	Sp. nov	Valid	Geiger & Goedert	Eocene or Oligocene (latest Priabonian or earliest Rupelian)	Gries Ranch Formation	United States ( Washington)	A species of Scissurella.
Scutus mirus^[103]	Sp. nov	Valid	Gard	Late Oligocene to early Miocene		New Zealand	A species of Scutus.
Seguenzia statiana^[104]	Sp. nov	Valid	Sosso, Bertolaso & Dell’Angelo	Miocene (Tortonian)	Marne di S. Agata Fossili Formation	Italy	A species of Seguenzia.
Selvovum^[68]	Gen. et comb. nov	Valid	Juárez-Ruiz, Matamales-Andreu & Kadolsky	Late Eocene		Spain	A member of the family Vidaliellidae; a new genus for "Ampullaria" selvensis.
Semicypraea italorossii^[105]	Sp. nov	Valid	Checchi, Zamberlan & Alberti	Eocene (Ypresian-Lutetian)		Italy	A member of the family Cypraeidae.
Semiricinula preturbinoides^[106]	Sp. nov	Valid	Landau et al.	Miocene (Langhian)		Indonesia	A species of Semiricinula.
Skenea wesselinghi^[107]	Sp. nov	Valid	Hoeksema & Simons	Pliocene		Belgium Netherlands	A species of Skenea.
Skeneopsoides^[91]	Gen. et sp. nov	Valid	Hoeksema, Rijken & Simons	Pliocene		Netherlands	A member of the family Skeneidae. Genus includes new species S. dejongi.
Spiralinella pagoda^[64]	Sp. nov	Valid	Landau et al.	Miocene (Tortonian)		France	A species of Spiralinella.
Spinatus^[108]	Gen. et 2 sp. et comb. nov	Valid	Dekkers et al.	Miocene		Indonesia	A member of the family Strombidae. The type species is S. echinatus; genus also includes new species S. wonosariensis, as well as "Strombus" tjilonganensis Martin (1899).
Steenbergia wohlmuthorum^[109]	Sp. nov	Valid	Walther & Groh	Late Pleistocene		Madeira	A member of the family Geomitridae.
Stegocoelia samaraensis^[61]	Sp. nov	Valid	Mazaev	Permian (Sakmarian)		Russia
Stephaniphera^[110]	Gen. et sp. nov	Valid	Schneider, Kollmann & Pickford	Late Cretaceous	Al-Khodh Formation	Oman	A member of Cerithioidea belonging to the family Hemisinidae. The type species is S. coronata.
Strebloceras kobayashii^[111]	Sp. nov	Valid	Haga	Middle Pleistocene	Toyohashi Formation	Japan	A member of the family Caecidae.
Streptacis? khaokhadensis^[58]	Sp. nov	Valid	Ketwetsuriya et al.	Permian (Roadian)	Khao Khad Formation	Thailand
Streptacis volgenesis^[61]	Sp. nov	Valid	Mazaev	Permian (Sakmarian)		Russia
Striactaenonina elegans^[87]	Sp. nov	Valid	Ferrari, Little & Atkinson	Early Jurassic (Toarcian)	Blea Wyke Sandstone Formation	United Kingdom	A member of Architectibranchia belonging to the family Tubiferidae.
Subtemenia^[110]	Gen. et comb. nov	Valid	Schneider, Kollmann & Pickford	Late Cretaceous	Al-Khodh Formation	Iran Oman	A member of the family Pseudomelaniidae. The type species is "Paryphostoma" morgani Douvillé (1904).
Siphocypraea daughenbaughi^[112]	Sp. nov		Berschauer & Waller		Tamiami Formation	United States ( Florida)	A member of the family Cypraeidae.
Subpterynotus feliciae^[113]	Sp. nov		Petuch & Berschauer			United States ( Florida)	A species of Subpterynotus.
Subpterynotus gabbi^[113]	Sp. nov		Petuch & Berschauer			United States ( Florida)	A species of Subpterynotus.
Teretia horroi^[59]	Sp. nov	Valid	Landau, Van Dingenen & Ceulemans	Miocene (Tortonian)		France	A species of Teretia.
Trachydomia suwanneeae^[58]	Sp. nov	Valid	Ketwetsuriya et al.	Permian (Roadian)	Khao Khad Formation	Thailand
Trachyspira eleganta^[58]	Sp. nov	Valid	Ketwetsuriya et al.	Permian (Roadian)	Khao Khad Formation	Thailand
Triptychia catalanica^[67]	Sp. nov	Valid	Harzhauser et al.	Late Eocene		Spain
Triptychia tomerdingensis^[114]	Sp. nov	Valid	Kadolsky	Miocene (Aquitanian)		Germany	A member of the family Filholiidae.
Trochomodulus stampinicus^[85]	Sp. nov	Valid	Lozouet, Cahuzac & Charles	Oligocene (Rupelian)		France	A member of the family Modulidae.
Truncatellina dilatatus^[115]	Sp. nov	Valid	Yu	Late Cretaceous (Cenomanian)	Burmese amber	Myanmar	Originally described as a species of Truncatellina; Balashov (2021) transferred it to the genus Euthema.^[116]
Trypanocochlea lopburiensis^[58]	Sp. nov	Valid	Ketwetsuriya et al.	Permian (Roadian)	Khao Khad Formation	Thailand
Turbo histrioides^[117]	Sp. nov	Valid	Kase et al.	Miocene		Japan	A species of Turbo.
Turbo izuensis^[117]	Sp. nov	Valid	Kase et al.	Miocene		Japan	A species of Turbo.
Turricarychium^[55]	Gen. et sp. nov	Valid	Kadolsky	Early Eocene		Germany	A member of the family Ellobiidae belonging to the subfamily Carychiinae. The type species is T. muelleri.
Turritelloidea stepheni^[87]	Sp. nov	Valid	Ferrari, Little & Atkinson	Early Jurassic (Toarcian)	Blea Wyke Sandstone Formation	United Kingdom	A member of the family Gordenellidae.
Umbilia darryli^[118]	Sp. nov	Valid	Hawke	Miocene		Australia	A species of Umbilia.
Umbilia hallani^[118]	Sp. nov	Valid	Hawke	Miocene		Australia	A species of Umbilia.
Vermetujanulus^[109]	Gen. et sp. nov	Valid	Walther & Groh	Late Pleistocene		Madeira	A member of the family Gastrodontidae. Genus includes new species V. boessnecki.
Vetulonia philippinensis^[72]	Sp. nov	Valid	Kiel, Aguilar & Kase	Late Pliocene	Bata Formation	Philippines	A species of Vetulonia.
Vexillum pseudoschafferi^[119]	Sp. nov	Valid	Biskupič	Miocene (Serravallian)	Studienka Formation	Slovakia	A species of Vexillum.
Vexillum svagrovskyi^[119]	Sp. nov	Valid	Biskupič	Miocene (Serravallian)	Studienka Formation	Slovakia	A species of Vexillum.
Vicetia bizzottoi^[120]	Sp. nov	Valid	Dominici, Fornasiero & Giusberti	Eocene (Priabonian)	Possagno Marl Formation	Italy	A member of the family Cypraeidae belonging to the subfamily Gisortiinae.
Worthenia humiligrada^[58]	Sp. nov	Valid	Ketwetsuriya et al.	Permian (Roadian)	Khao Khad Formation	Thailand
Worthenia morovi^[61]	Sp. nov	Valid	Mazaev	Permian (Sakmarian)		Russia
Xenostoma^[63]	Gen. et sp. nov	Disputed	Bullis et al.	Late Cretaceous (Cenomanian)	Burmese amber	Myanmar	Genus includes new species X. lophopleura. Originally described as a member of the family Pupinidae; Balashov (2021) considered Xenostoma to be a junior synonym of the diplommatinid genus Euthema, and transferred X. lophopleura to the latter genus.^[116]
Yunnania inflata^[58]	Sp. nov	Valid	Ketwetsuriya et al.	Permian (Roadian)	Khao Khad Formation	Thailand
Zuella^[55]	Gen. et sp. nov	Valid	Kadolsky	Early Eocene		Germany	A member of the family Ellobiidae belonging to the subfamily Carychiinae. The type species is Z. venusta.

Research

A study on the evolutionary history of pteropods, based on molecular data and revised fossil evidence, is published by Peijnenburg et al. (2020).^[121]

Bivalves

New taxa

Name	Novelty	Status	Authors	Age	Type locality	Country	Notes
Adelfia^[122]	Gen. et comb. et sp. nov	Valid	Alvarez & Río	Eocene	La Meseta Formation Loreto Formation Submeseta Formation	Antarctica Chile	A member of the family Veneridae. The type species is "Eumarcia" austrolissa Stilwell & Zinsmeister (1992); genus also includes "Venus" arenosa Ortmann (1899), as well as new species A. omega.
Aguileria romualdoensis^[123]	Sp. nov	In press	Rodrigues et al.	Early Cretaceous (Aptian)	Romualdo Formation	Brazil	A member of the family Bakevelliidae.
Amudariella^[124]	Gen. et comb. nov	Valid	Cooper	Cretaceous		Uzbekistan	A member of Trigoniida belonging to the group Myophorelloidea. The type species is "Trigonia" amudariensis Arkhanguelsky (1916); genus also includes "Korobkovitrigonia" subamudariensis Saveliev (1958).
Araripenaia^[125]	Gen. et sp. nov	Valid	Da Silva et al.	Early Cretaceous	Crato Formation	Brazil	An unionid bivalve with possible hyriid affinities. Genus includes new species A. elliptica.
Araripevellia^[123]	Gen. et sp. nov	In press	Rodrigues et al.	Early Cretaceous (Aptian)	Romualdo Formation	Brazil	A member of the family Bakevelliidae. Genus includes new species A. musculosa.
Arca budoensis^[126]	Sp. nov	Valid	Amano in Amano & Kurita	Early Miocene	Asahi Formation	Japan	A species of Arca.
Archivesica pastori^[72]	Sp. nov	Valid	Kiel, Aguilar & Kase	Late Pliocene	Bata Formation	Philippines	A member of the family Vesicomyidae.
Astarte danningeri^[127]	Sp. nov	Valid	Mandic et al.	Early Miocene		Austria	A species of Astarte.
Avichlamys hoferhauseri^[128]	Sp. nov	Valid	Szente	Early Triassic	Werfen Formation	Austria
Bobkovaella^[124]	Gen. et comb. nov	Valid	Cooper	Cretaceous		Russia	A member of Trigoniida belonging to the group Myophorelloidea. Genus includes "Trigonia" sydorenkoeremeievae Scheglova-Borodina (1960) and "Korobkovitrigonia" tobolica Pojarkova (1990).
Bogdanovaella^[124]	Gen. et comb. nov	Valid	Cooper	Cretaceous		Turkmenistan Uzbekistan	A member of Trigoniida belonging to the group Myophorelloidea. Genus includes "Korobkovitrigonia" conspecta Vinokurova (1970), "Trigonia" darwaseana Romanovsky (1890), "Trigonia" ferganensis Arkhanguelsky (1916), "Korobkovitrigonia" kugitangensis Burkova (1963), "Trigonia" rhombifera Romanovsky (1890) and "Korobkovitrigonia" tagamensis Belyakova (1970).
Cochisella^[124]	Gen. et comb. nov	Valid	Cooper	Cretaceous		United States ( Arizona Texas)	A member of Trigoniida belonging to the group Myophorelloidea. The type species is "Trigonia" guildi Stoyanow (1949); genus also includes "Trigonia" dumblei Stoyanow (1949), "Trigonia" gordoni Whitney (1952), "Trigonia" mearnsi Stoyanow (1949), "Trigonia" resoluta Stoyanow (1949), "Trigonia" saavedra Stoyanow (1949) and "Trigonia" taffi Cragin (1893).
Channelaxinus antipoloensis^[72]	Sp. nov	Valid	Kiel, Aguilar & Kase	Early Pleistocene	Bata Formation	Philippines	A member of the family Thyasiridae.
Conchocele majimai^[72]	Sp. nov	Valid	Kiel, Aguilar & Kase	Late Pliocene	Bata Formation	Philippines	A member of the family Thyasiridae.
Conchocele visayaensis^[72]	Sp. nov	Valid	Kiel, Aguilar & Kase	Early Pleistocene	Bata Formation	Philippines	A member of the family Thyasiridae.
Cratonaia^[129]	Gen. et sp. nov	Valid	Da Silva et al.	Early Cretaceous (Aptian)	Crato Formation	Brazil	A bivalve belonging to the order Unionida and to the group Silesunionoidea. Genus includes new species C. novaolindensis.
Cristaflabellum^[130]	Gen. et comb. nov	Valid	Hautmann et al.	Triassic	San Cassiano Formation	Bosnia and Herzegovina Italy	A member of the group Aviculopectinoidea. The type species is "Pecten" volaris Bittner (1902); genus also includes "Pecten" interstriatus Münster (1841).
Diplodonta oesia^[131]	Nom. nov	Valid	Pacaud	Eocene (Lutetian)		France	A replacement name for Diplodonta profunda Deshayes (1857)
Dulcina liogliogensis^[72]	Sp. nov	Valid	Kiel, Aguilar & Kase	Late Pliocene	Bata Formation	Philippines	A member of the family Lucinidae.
Dulcina magoi^[72]	Sp. nov	Valid	Kiel, Aguilar & Kase	Late Pliocene	Bata Formation	Philippines	A member of the family Lucinidae.
Elliptiolucina fernandoi^[72]	Sp. nov	Valid	Kiel, Aguilar & Kase	Late Pliocene to early Pleistocene	Bata Formation	Philippines	A member of the family Lucinidae.
Eothyasira^[132]	Gen. et comb. nov	Valid	Karapunar et al.	Early Jurassic (Pliensbachian)		Germany	Genus includes "Venus" antiqua Münster (1841).
Geloina amithoscutana^[110]	Sp. nov	Valid	Schneider, Kollmann & Pickford	Late Cretaceous	Al-Khodh Formation	Oman	A member of the family Cyrenidae.
Gibbolucina aremorica^[131]	Nom. nov	Valid	Pacaud	Eocene		France	A member of the family Lucinidae; a replacement name for Lucina profunda Dufour (1881)
Globodiscus^[130]	Gen. et 2 sp. nov	Valid	Hautmann et al.	Triassic		Indonesia Romania	A member of the group Aviculopectinoidea. Genus includes new species G. kiliani and G. vinzenti.
Gyrostrea bogdanovae^[133]	Sp. nov	Valid	Kosenko & Metelkin	Early Cretaceous (Hauterivian–Barremian)	Kugusem Formation	Kazakhstan	An oyster.
Illyricocongeria forcakovici^[66]	Sp. nov	Valid	Mandic, Harzhauser & Neubauer	Middle Miocene		Bosnia and Herzegovina
Lima allerdingensis^[127]	Sp. nov	Valid	Mandic et al.	Early Miocene		Austria	A species of Lima.
Limopsis quenstedti^[132]	Nom. nov	Valid	Karapunar et al.				A replacement name for Nucula aurita Quenstedt (1856).
Lucinoma canudai^[72]	Sp. nov	Valid	Kiel, Aguilar & Kase	Early Pleistocene	Bata Formation	Philippines	A member of the family Lucinidae.
Lucinoma kosatorea^[72]	Sp. nov	Valid	Kiel, Aguilar & Kase	Early Pleistocene	Bata Formation	Philippines	A member of the family Lucinidae.
Lucinoma tinagoensis^[72]	Sp. nov	Valid	Kiel, Aguilar & Kase	Early Pleistocene	Bata Formation	Philippines	A member of the family Lucinidae.
Lucinoma velosoi^[72]	Sp. nov	Valid	Kiel, Aguilar & Kase	Early Pleistocene	Bata Formation	Philippines	A member of the family Lucinidae.
Lutetigonia^[124]	Gen. et comb. nov	Valid	Cooper	Cretaceous		France Tunisia	A member of Trigoniida belonging to the group Myophorelloidea. The type species is "Trigonia" palmata Leymerie (1842); genus also includes "Trigonia" cherahilensis Mongin (1951).
Lyropecten terrysmithae^[134]	Sp. nov	Valid	Powell, Millard & Garcia	Miocene	Monterey Formation Santa Margarita Sandstone	United States ( California)	A scallop.
Macheromenilia^[124]	Gen. et comb. nov	Valid	Cooper	Cretaceous		France	A member of Trigoniida belonging to the group Myophorelloidea. The type species is "Trigonia" constantii d'Orbigny (1844).
Malletia tsubetsuensis^[135]	Sp. nov	Valid	Matsubara in Matsubara et al.	Miocene (Aquitanian)	Tsubetsu Formation	Japan	A member of the family Malletiidae
Marciachlys^[122]	Gen. et comb. nov	Valid	Alvarez & Río	Eocene	Submeseta Formation	Antarctica	A member of the family Veneridae. The type species is "Eurhomalea" inflata Zinsmeister (1984).
Mezounio^[136]	Gen. et sp. nov	Valid	Zakharov in Zakharov et al.	Middle Jurassic (Bajocian)		Russia	An unionid bivalve. Genus includes new species M. zverkovi.
Monginellopsis^[125]	Gen. et sp. nov	Valid	Da Silva et al.	Early Cretaceous	Crato Formation	Brazil	A bivalve with possible trigonioidid affinities. Genus includes new species M. bellaradiata.
Monopleura alesta^[137]	Sp. nov	Valid	Masse & Fenerci-Masse	Early Cretaceous (Barremian)		France	A rudist bivalve.
Monopleura jurensis^[137]	Sp. nov	Valid	Masse & Fenerci-Masse	Early Cretaceous (Hauterivian)		France	A rudist bivalve.
Muscatella^[110]	Gen. et sp. nov	Valid	Schneider, Kollmann & Pickford	Late Cretaceous	Al-Khodh Formation	Oman	A member of the family Cyrenidae. The type species is M. biszczukae.
Myonera inouei^[138]	Sp. nov	Valid	Amano in Amano & Kurita	Paleocene (Selandian)	Tomikawa Formation	Japan	A member of the family Cuspidariidae.
Myonia aparicioi^[139]	Sp. nov	Valid	Díaz Saravia & González	Carboniferous (Pennsylvanian)	Santa Elena Formation	Argentina
Nanogyra brevisulcata^[140]	Sp. nov	Valid	Toscano & Lazo	Early Cretaceous	Neuquén Basin	Argentina	A bivalve belonging to the family Gryphaeidae.
Neoquadratotrigonia^[124]	Gen. et comb. nov	Valid	Cooper	Cretaceous		Belgium France United Kingdom	A member of Trigoniida belonging to the group Myophorelloidea. The type species is "Trigonia" quadrata Agassiz (1840); genus also includes "Trigonia daedalea" bracquegniensis Gillet (1920, raised to the rank of the species N. bracquegniensis), "Trigonia daedalea" var. confusa Lycett (1875, raised to the rank of the species N. confusa), "Trigonia" daedalea Parkinson (1811), "Trigonia" rudis Parkinson (1811) and "Trigonia" spectabilis Sowerby (1826).
Nicaniella schoberti^[132]	Sp. nov	Valid	Karapunar et al.	Early Jurassic (Pliensbachian)		Germany
Oesterheldia^[141]	Gen. et sp. nov	Valid	Pérez & Giachetti	Late Oligocene – early Miocene		Argentina	A member of the family Carditidae. The type species is "Venericardia" cannada Ihering (1907); genus also includes "Cyclocardia" dalek Pérez & del Río (2017).
Palaeomutela australis^[142]	Sp. nov	Valid	Guerrini et al.	Permian	Rio do Rasto Formation	Brazil	A bivalve belonging to the group Actinodontida and the family Palaeomutelidae. Announced in 2019; the final version of the article naming it was published in 2020.
Paracuspidaria^[132]	Gen. et comb. nov	Valid	Karapunar et al.	Early Jurassic (Pliensbachian)		Germany	Genus includes "Cypricardia" goldfussiana Kuhn (1935) and "Cypricardia" walteri Kuhn (1935).
Permophorus? yrigoyeni^[139]	Sp. nov	Valid	Díaz Saravia & González	Carboniferous (Pennsylvanian)	Santa Elena Formation	Argentina
Pholadomya miyanoharaensis^[143]	Nom. nov	Valid	Matsubara	Cretaceous		Japan	A replacement name for Pholadomya japonica Amano (1956).
Pratulum kurrawchipellu^[144]	Sp. nov	Valid	Rojas & Nielsen	Early Miocene	Ipún Beds	Chile	A species of Pratulum.
Pratulum terpoorteni^[144]	Sp. nov	Valid	Rojas & Nielsen	Early Miocene	Navidad Formation	Chile	A species of Pratulum.
Promytilus rochacamposi^[139]	Sp. nov	Valid	Díaz Saravia & González	Carboniferous (Pennsylvanian)	Santa Elena Formation	Argentina
Protocardia broilii^[145]	Sp. nov	Valid	Yanin	Early Cretaceous (Berriasian)		Crimean Peninsula
Relogiincola^[142]	Gen. et sp. nov	Valid	Guerrini et al.	Permian	Rio do Rasto Formation	Brazil	A bivalve belonging to the group Edmondioidea and the family Pachydomidae. Genus includes new species R. delicata. Announced in 2019; the final version of the article naming it was published in 2020.
Retroceramus alliensis^[136]	Sp. nov	Valid	Zakharov in Zakharov et al.	Middle Jurassic (Bajocian)		Russia
Retroceramus (?) inopinatus^[136]	Sp. nov	Valid	Zakharov in Zakharov et al.	Middle Jurassic (Bajocian)		Russia
Rollieria franconica^[132]	Sp. nov	Valid	Karapunar et al.	Early Jurassic (Pliensbachian)		Germany
Rollieria goldfussi^[132]	Nom. nov	Valid	Karapunar et al.				A replacement name for Nucula subovalis Goldfuss (1837).
Romanovskajaella^[124]	Gen. et comb. nov	Valid	Cooper	Cretaceous			A member of Trigoniida belonging to the group Myophorelloidea. The type species is "Korobkovitrigonia" mediasiatica Belyakova (1970); genus also includes "Korobkovitrigonia" akkaptschigensis Belyakova (1970), "Korobkovitrigonia" bobkovae Belyakova (1970), "Korobkovitrigonia" gissarensis Belyakova (1970) and "Korobkovitrigonia" rugosa Belyakova (1970).
Romanovskiella^[124]	Gen. et comb. nov	Valid	Cooper	Cretaceous		Uzbekistan	A member of Trigoniida belonging to the group Myophorelloidea. The type species is "Trigonia" romanovskii Arkhanguelsky (1916); genus also includes "Trigonia" aralensis Arkhangelsky (1912).
Saveligonia^[124]	Gen. et comb. nov	Valid	Cooper	Cretaceous		Russia Turkmenistan	A member of Trigoniida belonging to the group Myophorelloidea. The type species is "Litschkovitrigonia" media Saveliev (1958); genus also includes "Litschkovitrigonia inguschensis" alta Prozorovskii (1961, raised to the rank of the species S. alta), "Trigonia" inguschensis Renngarten (1926), "Trigonia" subdaedalea Renngarten (1926) and "Litschkovitrigonia" tenuituberculata Saveliev (1958).
Shajia^[146]	Gen. et sp. nov	Valid	Rao et al.	Early Cretaceous (Aptian or Albian)	Langshan Formation	China India	A rudist bivalve. Genus includes new species S. tibetica.
Terraia decarinata^[142]	Sp. nov	Valid	Guerrini et al.	Permian	Rio do Rasto Formation	Brazil	A bivalve belonging to the family Astartidae. Announced in 2019; the final version of the article naming it was published in 2020.
Trigonipraxis madjerensis^[98]	Sp. nov	Valid	Neubauer et al.	Miocene		Serbia	A member of the family Dreissenidae belonging to the subfamily Congeriinae.
Vinokurovaella^[124]	Gen. et comb. nov	Valid	Cooper	Cretaceous			A member of Trigoniida belonging to the group Myophorelloidea. The type species is "Korobkovitrigonia" grumosa Vinokurova (1970); genus also includes "Quadratotrigonia" turkmenica Vinokurova (1970).

Other mollusks

New taxa

Name	Novelty	Status	Authors	Age	Type locality	Country	Notes
Acanthochitona interglacialis^[147]	Sp. nov	Valid	Dell'Angelo et al.	Late Pleistocene		Saudi Arabia	A chiton, a species of Acanthochitona.
Apoptopegma joyceae^[148]	Sp. nov	Valid	Smith, Brock & Paterson	Cambrian (Guzhangian)	Shannon Formation	Australia	A rostroconch.
Catalanispira^[149]	Gen. et sp. et comb. nov	Valid	Ebbestad, Kolata & Isakar	Ordovician (Darriwilian and Sandbian)	Kõrgekallas Platteville	Estonia United States ( Illinois)	A member of the family Onychochilidae. The type species is C. plattevillensis; genus also includes "Clisospira" reinwaldti Öpik (1930).
Craspedochiton fontlevensis^[150]	Sp. nov	Valid	Dell’Angelo et al.	Miocene (Burdigalian)		France	A chiton, a species of Craspedochiton.
Craspedochiton lozoueti^[150]	Sp. nov	Valid	Dell’Angelo et al.	Oligocene (Rupelian)		France	A chiton, a species of Craspedochiton.
Crassaplax^[151]	Gen. et sp. nov	Valid	Högström, Ebbestad & Suzuki	Ordovician (Katian)	Boda Limestone	Sweden	A member of Paleoloricata. The type species is C. collicola.
Lepidochitona chalossensis^[150]	Sp. nov	Valid	Dell’Angelo et al.	Oligocene (Rupelian)		France	A chiton, a species of Lepidochitona.
Lepidochitona charlesi^[150]	Sp. nov	Valid	Dell’Angelo et al.	Oligocene (Rupelian)		France	A chiton, a species of Lepidochitona.
Lepidochitona larratensis^[150]	Sp. nov	Valid	Dell’Angelo et al.	Oligocene (Rupelian)		France	A chiton, a species of Lepidochitona.
Lepidochitona tarbelliana^[150]	Sp. nov	Valid	Dell’Angelo et al.	Oligocene (Rupelian)		France	A chiton, a species of Lepidochitona.
Lepidochitona tessellata^[150]	Sp. nov	Valid	Dell’Angelo et al.	Oligocene (Rupelian)		France	A chiton, a species of Lepidochitona.
Lepidochitona vancuycki^[150]	Sp. nov	Valid	Dell’Angelo et al.	Oligocene (Rupelian)		France	A chiton, a species of Lepidochitona.
Lucilina aqabaensis^[147]	Sp. nov	Valid	Dell'Angelo et al.	Late Pleistocene		Saudi Arabia	A chiton, a species of Lucilina.
Qaleruaqia^[152]	Gen. et sp. nov	Valid	Peel	Cambrian Stage 4	Aftenstjernesø Formation	Greenland	A member of the family Mattheviidae. The type species is Q. sodermanorum.
Pseudoacanthochitona marsanensis^[150]	Sp. nov	Valid	Dell’Angelo et al.	Miocene (Burdigalian)		France	A chiton.
Stenosemus radiatus^[150]	Sp. nov	Valid	Dell’Angelo et al.	Miocene (Burdigalian)		France	A chiton.
Tonicella adunca^[150]	Sp. nov	Valid	Dell’Angelo et al.	Miocene (Aquitanian)		France	A chiton, a species of Tonicella.
Tonicella nuda^[150]	Sp. nov	Valid	Dell’Angelo et al.	Oligocene (Rupelian)		France	A chiton, a species of Tonicella.

Research

New specimens of Pelagiella exigua with associated impressions of two clusters of chaetae, providing new information on the anatomy of this taxon, are described from the Cambrian Kinzers Formation (Pennsylvania, United States) by Thomas, Runnegar & Matt (2020), who infer the occurrence of a pair of chaeta-bearing appendages extending from the anterior body wall or foot of the animal (unique among living and extinct molluscs), and interpret Pelagiella as the earliest known stem gastropod.^[153]

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^ Xin Rao; Peter W. Skelton; Shin–ichi Sano; Yiqiang Zhang; Yichun Zhang; Yanhong Pan; Huawei Cai; Bo Peng; Tong Zhang; Zhaoxiong Ma (2020). "Shajia, a new genus of polyconitid rudist from the Langshan Formation of the Lhasa Block, Tibet, and its palaeogeographical implications" (PDF). Cretaceous Research. 105: Article 104151. Bibcode:2020CrRes.10504151R. doi:10.1016/j.cretres.2019.05.009. S2CID 195577398.
^ ^a ^b Bruno Dell'Angelo; Bernard M. Landau; Maurizio Sosso; Marco Taviani (2020). "Late Pleistocene Red Sea Mollusca: 1. Polyplacophora". Zootaxa. 4772 (3): 401–449. doi:10.11646/zootaxa.4772.3.1. PMID 33055600. S2CID 219467375.
^ Patrick M. Smith; Glenn A. Brock; John R. Paterson (2020). "Shelly fauna from the Cambrian (Miaolingian, Guzhangian) Shannon Formation and the SPICE event in the Amadeus Basin, Northern Territory". Alcheringa: An Australasian Journal of Palaeontology. 44 (1): 1–24. Bibcode:2020Alch...44....1S. doi:10.1080/03115518.2019.1660405. S2CID 210735142.
^ Jan Ove R. Ebbestad; Dennis R. Kolata; Mare Isakar (2020). "New onychochilid mollusks from the Middle and Upper Ordovician of Baltica and Laurentia". Journal of Paleontology. 95 (1): 106–122. doi:10.1017/jpa.2020.81.
^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l Bruno Dell’Angelo; Jean-Francois Lesport; Alain Cluzaud; Maurizio Sosso (2020). "The Oligocene to Miocene chitons (Mollusca: Polyplacophora) of the Aquitaine Basin, soutwestern France, and Ligerian Basin, western France. Part 2: Lepidochitonidae, Tonicellidae, Acanthochitonidae, Cryptoplacidae and Additions to Part 1". Bollettino Malacologico. 56 (1): 1–58.
^ Anette E. S. Högström; Jan Ove R. Ebbestad; Yutaro Suzuki (2020). "A new large mound dwelling chiton (Mollusca), from the Late Ordovician Boda Limestone of central Sweden". GFF. 142 (4): 297–303. Bibcode:2020GFF...142..297H. doi:10.1080/11035897.2020.1819406. hdl:10037/19506.
^ John S. Peel (2020). "The oldest palaeoloricate mollusc (Cambrian Series 2, Stage 4; North Greenland) and its bearing on aculiferan evolution". Bulletin of Geosciences. 95 (2): 127–144. doi:10.3140/bull.geosci.1779.
^ Roger D. K. Thomas; Bruce Runnegar; Kerry Matt (2020). "Pelagiella exigua, an early Cambrian stem gastropod with chaetae: lophotrochozoan heritage and conchiferan novelty". Palaeontology. 63 (4): 601–627. Bibcode:2020Palgy..63..601T. doi:10.1111/pala.12476.

[NJGPA2973-1] ^ ^a ^b ^c ^d ^e ^f ^g Dieter Korn; Konrad Bartzsch; Stella Zora Buchwald; Volker Ebbighausen; Dieter Weyer (2020). "The Late Devonian ammonoid subfamily Paratornoceratinae". Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen. 297 (3): 245–285. doi:10.1127/njgpa/2020/0924. S2CID 225274279.

[PJ545-2] S. V. Nikolaeva (2020). "New ammonoids from the Devonian–Carboniferous boundary beds in Berchogur (western Kazakhstan)". Paleontological Journal. 54 (5): 464–476. Bibcode:2020PalJ...54..464N. doi:10.1134/S003103012005010X. S2CID 222180193.

[PR244-3] Masayuki Ehiro; Tomowo Ozawa (2020). "Early Asselian (earliest Permian) ammonoids from the Taishaku Limestone, Akiyoshi Belt, southwest Japan: an Asselian ammonoid fauna of the Mid-Panthalassan Realm". Paleontological Research. 24 (4): 298–315. doi:10.2517/2020PR006. S2CID 222135427.

[Paracraginites-4] ^ ^a ^b ^c ^d ^e ^f ^g ^h Andrew S. Gale; William J. Kennedy (2020). "Upper Albian ammonites from North-East Texas". Revue de Paléobiologie, Genève. 39 (1): 1–139. doi:10.5281/zenodo.3936161.

[STSN99-5] ^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ Carlo Sarti (2020). "Il Titoniano del Trento Plateau (Alpi Meridionali): faune ad Ammoniti, Stratigrafia e variazioni paleo-ambientali" (PDF). Studi Trentini di Scienze Naturali. 99: 37–314.

[6] John C.W. Cope; Stephen M. Etches (2020). "Subdivision of the Kimmeridgian Autissiodorensis Zone (Upper Jurassic, UK)". Proceedings of the Geologists' Association. 131 (5): 528–534. Bibcode:2020PrGA..131..528C. doi:10.1016/j.pgeola.2020.03.006. S2CID 219455302.

[Roopnarinites-7] ^ ^a ^b ^c ^d ^e ^f Romain Jattiot; Hugo Bucher; Arnaud Brayard (2020). "Smithian (Early Triassic) ammonoid faunas from Timor: taxonomy and biochronology" (PDF). Palaeontographica Abteilung A. 317 (1–6): 1–137. Bibcode:2020PalAA.317....1J. doi:10.1127/pala/2020/0096. S2CID 216265820.

[Coquandiceras-8] ^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k William James Kennedy (2020). "Upper Albian, Cenomanian and Upper Turonian ammonite faunas from the Fahdène Formation of Central Tunisia and correlatives in northern Algeria". Acta Geologica Polonica. 70 (2): 147–272. doi:10.24425/agp.2019.126459.

[GeobiosBouleiceras-9] Gemma Martínez; Fernando García Joral (2020). "Bouleiceras (Hildoceratidae, Ammonitina) from the lower Toarcian (Jurassic) of the Iberian Range (Spain): Taxonomy, stratigraphic distribution and insights on its dispersal" (PDF). Geobios. 62: 31–44. Bibcode:2020Geobi..62...31M. doi:10.1016/j.geobios.2020.07.001. S2CID 225404680.

[RP391Cagliceras-10] Zoltán Kovács; Mihály Dunai; Zoltán Evanics (2020). "Toarcian (Jurassic) Ammonitina fauna and stratigraphy from Bakonycsernye (Hungary)". Revue de Paléobiologie, Genève. 39 (1): 141–181. doi:10.5281/zenodo.3936163.

[CdG204-11] Francis Amédro; Francis Robaszynski; Hervé Châtelier; Patrice Ferchaud; Bertrand Matrion (2020). "Identification d'un biohorizon d'ammonites à Romaniceras (Romaniceras) marigniacum sp. nov. (Turonien moyen) à la base du Tuffeau Jaune de Touraine (France)". Carnets de Géologie. 20 (4): 37–89. doi:10.4267/2042/70720. hdl:2042/70720.

[PPGoniatites-12] Dieter Korn; Zdzisław Belka; Stanisław Skompski; Michał Jakubowicz; Sezim Mustapaeva; Adilkhan Baibatsha (2020). "First record of the Early Carboniferous ammonoid genus Goniatites from the Greater Karatau (Kazakhstan palaeocontinent)". Palaeobiodiversity and Palaeoenvironments. 100 (4): 985–992. Bibcode:2020PdPe..100..985K. doi:10.1007/s12549-020-00427-2. S2CID 220721321.

[13] V. V. Mitta; A. V. Stupachenko (2020). "The first record of Gregoryceras (Ammonoidea, Aspidoceratidae) in the middle Oxfordian of the northern part of central Russia (Unzha River)". Paleontological Journal. 54 (1): 14–19. Bibcode:2020PalJ...54...14M. doi:10.1134/S0031030120010062. S2CID 212936563.

[14] Dieter Korn; Vachik Hairapetian; Hossein Gholamalian (2020). "Gigantism in Late Devonian ammonoids from Chahriseh (Central Iran)". Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen. 297 (3): 287–294. doi:10.1127/njgpa/2020/0925. S2CID 225181318.

[Lenicostites-15] Didier Bert; Stéphane Bersac; Léon Canut (2020). "Implications of the 'hemihoplitid-like' ammonites iterative morphology in the context of the late Tethyan Barremian (Early Cretaceous)" (PDF). Cretaceous Research. 106: Article 104239. Bibcode:2020CrRes.10604239B. doi:10.1016/j.cretres.2019.104239. S2CID 203109250.

[16] Dieter Korn; Qiulai Wang; Keyi Hu; Yuping Qi (2020). "The succession of the mid-Bashkirian ammonoids Cancelloceras and Gastrioceras in North China". Palaeoworld. 30 (1): 72–94. doi:10.1016/j.palwor.2020.04.009. S2CID 219413018.

[17] Neil H. Landman; W. James Kennedy; Joyce Grier; Neal L. Larson; James W. Grier; Thomas Linn; Lydia Tackett; Brian R. Jicha (2020). "Large scaphitid ammonites (Hoploscaphites) from the Upper Cretaceous (upper Campanian–lower Maastrichtian) of North America: endless variation on a single theme". Bulletin of the American Museum of Natural History. 441: 1–134. doi:10.1206/0003-0090.441.1.1. hdl:2246/7243. S2CID 221564470.

[18] V.A. Zakharov; M.A. Rogov (2020). "High-resolution stratigraphy of buchiid bivalves and ammonites from the Jurassic–Cretaceous boundary beds in the Paskenta area (California)". Cretaceous Research. 110: Article 104422. Bibcode:2020CrRes.11004422Z. doi:10.1016/j.cretres.2020.104422. S2CID 214032627.

[19] Günter Schweigert; Victor Schlampp (2020). "Hypowaagenia nov. gen., a rare genus of giant aspidoceratid ammonite from the Upper Jurassic of Southern Germany". Volumina Jurassica. 18 (1): 23–36.

[NJGPA2971Korn-20] Dieter Korn (2020). "Two new Late Famennian kosmoclymeniid ammonoids from the Anti-Atlas of Morocco". Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen. 297 (1): 37–45. doi:10.1127/njgpa/2020/0913. S2CID 225526898.

[21] Kittichai Tongtherm; Yasunari Shigeta; Apsorn Sardsud; Katsuo Sashida; Sachiko Agematsu (2020). "Age of the Early Triassic ichthyopterygian Thaisaurus inferred from ammonoid biostratigraphy". Paleontological Research. 24 (4): 276–284. doi:10.2517/2019PR022. S2CID 222136795.

[Margoceras-22] K. V. Borissenkov (2020). "New data on Cisuralian ammonoids of Pay-Khoy (Russian Arctic) from the family Paragastrioceratidae Ruzhencev, 1951". Paleontological Journal. 54 (10): 1178–1188. Bibcode:2020PalJ...54.1178B. doi:10.1134/S0031030120100020. S2CID 231745033.

[23] Camille Frau; William A.P. Wimbledon; Christina Ifrim; Luc G. Bulot; Alexandre Pohl (2020). "Berriasian ammonites of supposed Tethyan origin from the type 'Ryazanian', Russia: a systematic re-interpretation" (PDF). Palaeoworld. 30 (3): 515–537. doi:10.1016/j.palwor.2020.07.004. ISSN 1871-174X. S2CID 225379003.

[24] Peter Hodges (2020). "A new ammonite from the Penarth Group, South Wales and the base of the Jurassic System in SW Britain". Geological Magazine. 158 (6): 1109–1114. doi:10.1017/S0016756820001107. S2CID 234794936.

[25] Romain Jattiot; Alexis Gris; Vincent Trincal (2020). "New occurrence of the middle Toarcian "Telodactylites "eucosmus (Lippi Boncambi, 1947) (Ammonitina) from the NW European realm, and introduction of a new genus". Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen. 295 (1): 53–60. doi:10.1127/njgpa/2020/0867. S2CID 214209940.

[PJ546-26] R. V. Kutygin (2020). "The Permian ammonoid family Medlicottiidae in the Verkhoyansk Region". Paleontological Journal. 54 (6): 571–583. Bibcode:2020PalJ...54..571K. doi:10.1134/S0031030120060039. S2CID 227132614.

[Procrioceratites-27] Jean Vermeulen; Alain Borro; Pierre Lazarin; Patrick Lépinay; Lucien Leroy; Emile Mascarelli (2020). "Nouveaux taxa d'ammonites du Crétacé inférieur du Sud-Est de la France". Riviera Scientifique. 104: 129–146.

[28] Jean Vermeulen; Lucien Leroy; Alain Borro; Pierre Lazarin; Patrick Lépinay; Emile Mascarelli (2020). "Sur quatre espèces d'ammonites du Crétacé inférieur téthysien (Hauterivien supérieur, Barrémien inférieur)". Annales du Muséum d'Histoire Naturelle de Nice. XXXV: 1–30.

[29] A. S. Alifirov; V. G. Knyazev (2020). "The Upper Callovian Ammonites Cardioceratidae from Northern Siberia". Stratigraphy and Geological Correlation. 28 (5): 493–513. Bibcode:2020SGC....28..493A. doi:10.1134/S0869593820050032. S2CID 222234390.

[30] W. J. Kennedy (2020). "The Ammonoidea of the Upper Chalk. Part 2". Monographs of the Palaeontographical Society. 174 (656): 106–290. Bibcode:2020MPalS.174..106K. doi:10.1080/02693445.2020.1759932. S2CID 221980193.

[31] Eva A. Bischof; Jens Lehmann (2020). "Ontogenetic analysis of Anisian (Middle Triassic) ptychitid ammonoids from Nevada, USA". Journal of Paleontology. 94 (5): 829–851. Bibcode:2020JPal...94..829B. doi:10.1017/jpa.2020.25. S2CID 219404794.

[32] William James Kennedy (2020). "On some Turonian and Coniacian ammonites from central Colombia". Acta Geologica Polonica. 71 (3): 259–285. doi:10.24425/agp.2020.134557.

[33] Yusuke Muramiya; Yasunari Shigeta (2020). "Sormaites, a New Heteromorph Ammonoid Genus from the Turonian (Upper Cretaceous) of Hokkaido, Japan". Paleontological Research. 25 (1): 11–18. doi:10.2517/2020PR016. S2CID 229723546.

[34] Zdeněk Vašíček (2020). "Tescheniceras gen. nov. (Ammonoidea) and the definition of the Valanginian/Hauterivian boundary in Butkov Quarry (Central Western Carpathians, Slovakia)". Acta Geologica Polonica. 70 (4): 569–584. doi:10.24425/agp.2020.132260.

[35] Daisuke Aiba; Tomoki Karasawa; Tetsuro Iwasaki (2020). "A New Species of Yezoceras (Ammonoidea, Nostoceratidae) from the Coniacian in the Northwestern Pacific Realm". Paleontological Research. 25 (1): 1–10. doi:10.2517/2020PR008. S2CID 229723571.

[36] Nicholas Hebdon; Kathleen A. Ritterbush; YunJi Choi (2020). "Computational fluid dynamics modeling of fossil ammonoid shells". Palaeontologia Electronica. 23 (1): Article number 23(1):a21. doi:10.26879/956.

[37] Robert Lemanis (2020). "The ammonite septum is not an adaptation to deep water: re-evaluating a centuries-old idea". Proceedings of the Royal Society B: Biological Sciences. 287 (1936): Article ID 20201919. doi:10.1098/rspb.2020.1919. PMC 7657852. PMID 33049174.

[38] Juan Antonio Pérez-Claros (2021). "A comment on Lemanis (2020): The ammonite septum is not an adaptation to deep water". Proceedings of the Royal Society B: Biological Sciences. 288 (1946): Article ID 20202641. doi:10.1098/rspb.2020.2641. ISSN 0962-8452. PMC 7935049. PMID 33653140.

[39] Robert Lemanis (2021). "A reply to a comment on Lemanis (2020): The ammonite septum is not an adaptation to deep water". Proceedings of the Royal Society B: Biological Sciences. 288 (1946): Article ID 20210068. doi:10.1098/rspb.2021.0068. PMC 7935077. PMID 33653131.

[40] Christopher D. Whalen; Pincelli M. Hull; Derek E. G. Briggs (2020). "Paleozoic ammonoid ecomorphometrics test ecospace availability as a driver of morphological diversification". Science Advances. 6 (37): eabc2365. Bibcode:2020SciA....6.2365W. doi:10.1126/sciadv.abc2365. PMC 11206447. PMID 32917688. S2CID 221616999.

[41] Alison J. Rowe; Neil H. Landman; J. Kirk Cochran; James D. Witts; Matthew P. Garb (2020). "Late Cretaceous methane seeps as habitats for newly hatched ammonites". PALAIOS. 35 (3): 151–163. Bibcode:2020Palai..35..151R. doi:10.2110/palo.2019.105. S2CID 214718487.

[42] David J. Peterman; Margaret M. Yacobucci; Neal L. Larson; Charles Ciampaglio; Tom Linn (2020). "A method to the madness: Ontogenetic changes in the hydrostatic properties of Didymoceras (Nostoceratidae: Ammonoidea)". Paleobiology. 46 (2): 237–258. Bibcode:2020Pbio...46..237P. doi:10.1017/pab.2020.14. S2CID 218826232.

[Alexoceras-43] ^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l T. B. Leonova; A. Yu. Shchedukhin (2020). "Asselian-Sakmarian nautiloids of the Shakh-Tau reef (Bashkortostan)". Paleontological Journal. 54 (10): 1113–1134. Bibcode:2020PalJ...54.1113L. doi:10.1134/S0031030120100044. S2CID 231745170.

[GFFlituitids-44] Martina Aubrechtová; Tõnu Meidla (2020). "Lituitid cephalopods from the upper Darriwilian and basal Sandbian (Middle–Upper Ordovician) of Estonia". GFF. 142 (4): 267–296. Bibcode:2020GFF...142..267A. doi:10.1080/11035897.2020.1762723. S2CID 225581341.

[45] Patrícia Rita; Robert Weis; Luís V. Duarte; Kenneth De Baets (2020). "Taxonomical diversity and palaeobiogeographical affinity of belemnites from the Pliensbachian–Toarcian GSSP (Lusitanian Basin, Portugal)". Papers in Palaeontology. 7 (3): 1321–1349. doi:10.1002/spp2.1343.

[46] Vojtěch Turek; Štěpán Manda (2020). "Discontinuous, asymmetric and irregular colour patterns in Silurian oncocerids (Nautiloidea) with cyrtoconic shells". Bulletin of Geosciences. 95 (3): 333–367. doi:10.3140/bull.geosci.1767.

[47] Helmut Keupp; Dirk Fuchs (2020). "Enigmabelus n. gen. (Enigmabelitidae n. f.), an Early Jurassic (Late Pliensbachian) belemnite with an outstanding rostrum morphology". Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen. 298 (1): 55–66. doi:10.1127/njgpa/2020/0933. S2CID 228945818.

[48] Aihua Yang; Diying Huang; Brett Clark; Consuelo Sendino (2020). "Description of new Permian orthocerid forms from Gufeng Formation of South China (the Yangtze Craton) and their palaeobiogeographic implications in the Palaeotethys". Historical Biology: An International Journal of Paleobiology. 33 (11): 2804–2821. doi:10.1080/08912963.2020.1830277. S2CID 228842538.

[49] Shuji Niko; Masayuki Ehiro (2020). "Trematoceras watanabei, a new orthoconic nautiloid species from the Middle Triassic Fukkoshi Formation, Miyagi Prefecture, Northeast Japan". Bulletin of the Tohoku University Museum. 19: 1–6. hdl:10097/00128649.

[50] Amane Tajika; Neil H. Landman; René Hoffmann; Robert Lemanis; Naoki Morimoto; Christina Ifrim; Christian Klug (2020). "Chamber volume development, metabolic rates, and selective extinction in cephalopods". Scientific Reports. 10 (1): Article number 2950. Bibcode:2020NatSR..10.2950T. doi:10.1038/s41598-020-59748-z. PMC 7031508. PMID 32076034.

[51] Alexander Pohle; Dirk Fuchs; Dieter Korn; Christian Klug (2020). "Spatial distribution of oncocerid cephalopods on a Middle Devonian bedding plane suggests semelparous life cycle". Scientific Reports. 10 (1): Article number 2847. Bibcode:2020NatSR..10.2847P. doi:10.1038/s41598-020-59507-0. PMC 7029046. PMID 32071346.

[52] Günter Schweigert (2020). "First records of Somalinautilus (Cephalopoda: Nautiloidea) from the Jurassic of Southern Germany – inferences for trans-provincial migrations". Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen. 298 (2): 137–146. doi:10.1127/njgpa/2020/0939. S2CID 228995666.

[53] Dirk Fuchs; Vladimir Laptikhovsky; Svetlana Nikolaeva; Alexei Ippolitov; Mikhail Rogov (2020). "Evolution of reproductive strategies in coleoid mollusks". Paleobiology. 46 (1): 82–103. Bibcode:2020Pbio...46...82F. doi:10.1017/pab.2019.41. S2CID 212725939.

[54] R. Hoffmann; J. Bestwick; G. Berndt; R. Berndt; D. Fuchs; C. Klug (2020). "Pterosaurs ate soft-bodied cephalopods (Coleoidea)". Scientific Reports. 10 (1): Article number 1230. Bibcode:2020NatSR..10.1230H. doi:10.1038/s41598-020-57731-2. PMC 6985239. PMID 31988362.

[Carychiopsina-55] ^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l Dietrich Kadolsky (2020). "A remarkable non-marine mollusc fauna of Early Eocene age from a fissure infill in Karsdorf quarry (Sachsen-Anhalt, Germany)". Geologica Saxonica. 65: 31–76. doi:10.26049/GEOLSAX65-2019-04.

[CR202Landauetal-56] Bernard Manuel Landau; Luc Ceulemans; Frank Van Dingenen (2020). "The upper Miocene gastropods of northwestern France, 6. Heterobranchia". Cainozoic Research. 20 (2): 257–278.

[57] A. V. Mazaev (2020). "A new Late Paleozoic gastropod genus Alanstukella gen. nov. (Trochonematidae)". Paleontological Journal. 54 (4): 332–338. Bibcode:2020PalJ...54..332M. doi:10.1134/S0031030120040097. S2CID 221167132.

[Altotomaria-58] ^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l ^m Chatchalerm Ketwetsuriya; Baran Karapunar; Thasinee Charoentitirat; Alexander Nützel (2020). "Middle Permian (Roadian) gastropods from the Khao Khad Formation, Central Thailand: Implications for palaeogeography of the Indochina Terrane". Zootaxa. 4766 (1): zootaxa.4766.1.1. doi:10.11646/zootaxa.4766.1.1. PMID 33056603. S2CID 219087520.

[CR201Landauetal-59] ^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l ^m ⁿ ^o ^p ^q ^r ^s ^t ^u ^v ^w ^x ^y ^z ^aa ^ab ^ac ^ad ^ae ^af ^ag ^ah ^ai ^aj ^ak ^al ^am ^an ^ao ^ap Bernard Manuel Landau; Frank Van Dingenen; Luc Ceulemans (2020). "The upper Miocene gastropods of northwestern France, 5. Conoidea". Cainozoic Research. 20 (1): 3–107.

[LandauMulderBasteria84-60] Bernard Manuel Landau; Henk Mulder (2020). "Additions and corrections to the gastropod fauna of the Pliocene of Estepona, southwestern Spain, 4". Basteria. Journal of the Netherlands Malacological Society. 84 (1–3): 26–57.

[PJ5410-61] ^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ A. V. Mazaev (2020). "Sakmarian gastropods from the Samarskaya Luka (Lower Permian, Volga-Urals)". Paleontological Journal. 54 (10): 1152–1177. Bibcode:2020PalJ...54.1152M. doi:10.1134/S0031030120100056. S2CID 231744647.

[LandauetalBasteria84-62] Bernard Manuel Landau; Alan G. Beu; Anton Breitenberger; Aart Marinus Dekkers (2020). "Middle Miocene tonnoidean gastropods from near Wonosari, Yogyakarta, Java, Indonesia". Basteria. Journal of the Netherlands Malacological Society. 84 (1–3): 10–25.

[Eotrichophorus-63] ^ ^a ^b ^c ^d ^e ^f David A. Bullis; Hollister W. Herhold; Jesse E. Czekanski-Moir; David A. Grimaldi; Rebecca J. Rundell (2020). "Diverse new tropical land snail species from mid-Cretaceous Burmese amber (Mollusca: Gastropoda: Cyclophoroidea, Assimineidae)". Cretaceous Research. 107: Article 104267. Bibcode:2020CrRes.10704267B. doi:10.1016/j.cretres.2019.104267. S2CID 210289753.

[CR202Landauetal2-64] ^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l ^m ⁿ ^o ^p ^q ^r ^s ^t ^u ^v ^w ^x ^y ^z ^aa ^ab Bernard Manuel Landau; Pasquale Micali; Frank Van Dingenen; Luc Ceulemans (2020). "The upper Miocene gastropods of northwestern France, 7. Pyramidelloidea". Cainozoic Research. 20 (2): 279–364.

[65] I.A. Balashov; E.E. Perkovsky (2020). "An Eocene land snail Balticopta gusakovi gen.n., sp.n. (Stylommatophora: Gastrocoptidae) from Baltic amber". Invertebrate Zoology. 17 (1): 18–24. doi:10.15298/invertzool.17.1.02.

[PPMandicetal-66] Oleg Mandic; Mathias Harzhauser; Thomas A. Neubauer (2020). "Taxonomy, palaeoecology and stratigraphy of the middle Miocene mollusk fauna from the Gračanica coal pit near Bugojno in Bosnia and Herzegovina". Palaeobiodiversity and Palaeoenvironments. 100 (2): 519–549. Bibcode:2020PdPe..100..519M. doi:10.1007/s12549-020-00423-6. S2CID 219710446.

[Eohispania-67] ^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k Mathias Harzhauser; Thomas A. Neubauer; Hartmut Nordsieck; Judit Marigó; Raef Minwer-Barakat (2020). "Late Eocene non-marine gastropods from Roc de Santa (Spanish Pyrenees)". Archiv für Molluskenkunde: International Journal of Malacology. 149 (1): 13–47. doi:10.1127/arch.moll/149/013-047. S2CID 225706655.

[Calculocochlea-68] Josep Juárez-Ruiz; Rafel Matamales-Andreu; Dietrich Kadolsky (2020). "Shape and habitat disparity in Palaeogene land snails (Stylommatophora, Orthalicoidea, Vidaliellidae) of southwestern Europe: two new bulimoid genera from the Palaeogene of Mallorca (Balearic Islands, western Mediterranean)". Journal of Iberian Geology. 46 (2): 195–207. Bibcode:2020JIbG...46..195J. doi:10.1007/s41513-020-00121-4. S2CID 215413534.

[69] Olivier Gain; Laurent Belliard; Jacques Le Renard (2020). "Les Calliostomatidae (Mollusca, Gastropoda, Vetigastropoda) de l'Eocène Moyen du Cotentin (Manche, France). Introduction d'un nouveau genre: Callitrochilia n. gen". Carnets de Voyages Paléontologiques dans le Bassin Anglo-Parisien. 6: 143–164. ISBN 978-2-9538000-6-7.

[70] Jean-Michel Pacaud (2020). "Étude du genre Campanile Fischer, 1884 (Mollusca : Gastropoda : Campanilidae). 1. Description d'une espèce nouvelle du Miocène supérieur du Cap Amparafaka (Madagascar)". BSGF - Earth Sciences Bulletin. 191: Article number 21. doi:10.1051/bsgf/2020022.

[Cassitriton-71] ^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k Brian Craig; Steve Tracey; Olivier Gain; Laurent Belliard; Jacques Le Renard (2020). "Cymatiidae and Charoniidae (Gastropoda, Tonnoidea) from the Middle to Late Eocene of the Cotentin, NW France: a systematic revision". Carnets de Voyages Paléontologiques dans le Bassin Anglo-Parisien. 6: 1–94. ISBN 978-2-9538000-6-7.

[APP653Kieletal-72] ^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l ^m ⁿ ^o Steffen Kiel; Yolanda M. Aguilar; Tomoki Kase (2020). "Mollusks from Pliocene and Pleistocene seep deposits in Leyte, Philippines". Acta Palaeontologica Polonica. 65 (3): 589–627. doi:10.4202/app.00756.2020.

[Zootaxa47821-73] ^ ^a ^b ^c ^d ^e ^f ^g Christopher L. Garvie; James L. Goedert; Arie W. Janssen (2020). "Paleogene and Late Cretaceous Pteropoda (Mollusca, Gastropoda, Heterobranchia) from North America". Zootaxa. 4782 (1): zootaxa.4782.1.1. doi:10.11646/zootaxa.4782.1.1. PMID 33056508. S2CID 219747383.

[Oxfordina-74] ^ ^a ^b ^c ^d ^e ^f ^g ^h Joachim Gründel; Bernhard Hostettler; Ursula Menkveld-Gfeller (2020). "Gastropoden aus der Korallenrifffazies der St-Ursanne-Formation (mittleres Oxfordien) des Schweizer Jura. 2. Patellogastropoda und Vetigastropoda". Revue de Paléobiologie, Genève. 39 (1): 199–247. doi:10.5281/zenodo.3936167.

[75] Ewa Nosowska (2020). "Gastropods [Trochoidea: Trochidae Rafinesque, 1815 and Calliostomatidae Thiele, 1924 (1847)] from the middle Miocene of Ukraine, Central Paratethys". Acta Geologica Polonica. 70 (4): 453–528. doi:10.24425/agp.2019.126462.

[Geodiversitas4229-76] Jean-Michel Pacaud; Frédéric Sautereau (2020). "Contribution des motifs colorés résiduels dans la discrimination d'espèces nouvelles de Cryptochorda Mörch, 1858 (Mollusca: Gastropoda: Harpidae) de l'Éocène du bassin de Paris et du Cotentin". Geodiversitas. 42 (29): 559–595. doi:10.5252/geodiversitas2020v42a29. S2CID 229365676.

[77] Didier Merle; Bernard Landau (2020). "Review of the paleobiogeography of Eofavartia Merle, 2002 (Gastropoda: Muricidae) with the description of a new species from the Miocene of Java (Indonesia)" (PDF). Annales de Paléontologie. 106 (4): Article 102444. Bibcode:2020AnPal.10602444M. doi:10.1016/j.annpal.2020.102444. S2CID 228921414.

[AC19Fehse-78] ^ ^a ^b ^c ^d ^e ^f ^g ^h Dirk Fehse (2020). "Contributions to the knowledge of the Eratoidae, XXII. Early Miocene Eratoidae of Europe". Acta Conchyliorum. 19: 39–68.

[BalashovCR-79] Igor Balashov (2020). "An inventory of molluscs recorded from mid-Cretaceous Burmese amber, with the description of a land snail, Euthema annae sp. nov. (Caenogastropoda, Cyclophoroidea, Diplommatinidae)". Cretaceous Research. 118: Article 104676. doi:10.1016/j.cretres.2020.104676. S2CID 225122436.

[80] Igor A. Balashov; Evgeny E. Perkovsky; Dmitry V. Vasilenko (2020). "A mid-Cretaceous land snail Euthema truncatellina sp. nov. (Caenogastropoda, Cyclophoroidea, Diplommatinidae) from Burmese amber". Zootaxa. 4858 (2): 295–300. doi:10.11646/zootaxa.4858.2.11. PMID 33056238. S2CID 222819671.

[81] Vittorio Pieroni; Alexander Nützel (2020). "Freboldia carinii sp. nov. from the Middle Triassic Brembana Valley (Esino Limestone, Southern Alps, Italy) – possibly the oldest known holoplanktonic gastropod". Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen. 298 (1): 9–15. doi:10.1127/njgpa/2020/0929. S2CID 228957386.

[82] Jean-Michel Pacaud (2020). "Fusulculus hanseni nom. nov., un nouveau nom de remplacement pour Epalxis ? rosenkrantzi Hansen, 2019 non Fusulculus rosenkrantzi (Traub, 1979)". Folia Conchyliologica. 54: 7–11.

[83] A. V. Mazaev (2021). "Revision of the gastropod family Gosseletinidae Wenz: genera Gosseletina Fischer, 1885, Globodoma Mazaev, 2006, and Nemaspira gen. nov". Paleontological Journal. 55 (6): 600–607. Bibcode:2021PalJ...55..600M. doi:10.1134/S0031030121060071. S2CID 245010385.

[84] Keiji Matsuoka; Takahiro Hirano (2020). "A new species of the genus Heterogen (Mollusca: Caenogastropoda: Viviparidae) from the Pleistocene Katata Formation of the Kobiwako Group, Shiga Prefecture, central Japan". Plankton & Benthos Research. 15 (3): 232–237. doi:10.3800/pbr.15.232.

[CdG207-85] Pierre Lozouet; Bruno Cahuzac; Laurent Charles (2020). "New occurrences of Modulidae (Mollusca: Gastropoda) from European Eocene, Oligocene and Miocene deposits: Data from 19th century collections". Carnets de Géologie. 20 (7): 125–139. doi:10.4267/2042/70761.

[86] Bernard Manuel Landau; Pasquale Micali (2021). "The Pliocene Gastropoda (Mollusca) of Estepona, southern Spain. Part 13: Murchisonelloidea and Pyramidelloidea". Cainozoic Research. 21 (2): 201–393.

[PPFerrarietal-87] Mariel Ferrari; Crispin T. S. Little; Jed W. Atkinson (2020). "Upper Toarcian (Lower Jurassic) marine gastropods from the Cleveland Basin, England: systematics, palaeobiogeography and contribution to biotic recovery from the early Toarcian extinction event". Papers in Palaeontology. 7 (2): 885–912. doi:10.1002/spp2.1322. S2CID 225786788. Archived from the original on 24 Feb 2020. Alt URL

[88] Xin-fa Li; Guo-biao Li; Christopher L. Garvie; Tian-yang Wang; Jun Zhao (2020). "First report of the early Eocene pteropods from the Zhepure Formation in Yadong, southern Tibet, China". Journal of Paleontology. 94 (5): 819–828. Bibcode:2020JPal...94..819L. doi:10.1017/jpa.2020.28. S2CID 218958649.

[89] J. Gründel; B. Hostettler; U. Menkveld-Gfeller (2020). "Die Gattungen der Brachytrematidae Cossmann, 1906 (Gastropoda: Caenogastropoda) im Jura Europas" (PDF). Freiberger Forschungshefte C 558. psf - Paläontologie, Stratigraphie, Fazies. 25: 109–119.

[90] Jean-Michel Pacaud; Guillermo Gómez (2020). "Description d'une nouvelle espèce de Lozouetina Dolin & Dockery, 2018 (Mollusca, Gastropoda, Ovulidae) du Bartonien (Éocène moyen) de Loire-Atlantique (France) et de la province de Huesca (Espagne)". Folia Conchyliologica. 54: 33–47.

[Skeneopsoides-91] D. F. Hoeksema; A. C. Rijken; G. F. Simons (2020). "Moelleria jansseni spec. nov. and Skeneopsoides dejongi gen. et. spec. nov., two skeneimorph marine gastropods with obtuse axial ribs from the Plio-Pleistocene of NW Europe (Vetigastropoda, Trochoidea, Colloniidae, Skeneidae)". Vita Malacologica. 19.

[Carnets6Neritopsidae-92] Malcolm Francis Symonds; Olivier Gain; Jacques Le Renard (2020). "The Neritopsidae (Mollusca, Gastropoda, Neritimorpha) from the Middle Eocene of the Cotentin, (Manche, France)". Carnets de Voyages Paléontologiques dans le Bassin Anglo-Parisien. 6: 119–130. ISBN 978-2-9538000-6-7.

[AC19FehseVician-93] Dirk Fehse; Zoltán Vicián (2020). "Contributions to the knowledge of the Triviidae, XL. closing a gap". Acta Conchyliorum. 19: 114–120.

[94] Zoltán Kovács (2020). "New Muricidae (Neogastropoda) faunas from the Middle Miocene of Hungary". Földtani Közlöny. 150 (3): 449–468. doi:10.23928/foldt.kozl.2020.150.3.449.

[95] Marcello Guimarães Simões; Jacqueline Peixoto Neves; Arturo César Taboada; Maria Alejandra Pagani; Filipe Giovanini Varejão; Mário Luis Assine (2020). "Macroinvertebrates of the Capivari marine bed, late Paleozoic glacial Itararé Group, northeast Paraná Basin, Brazil: Paleoenvironmental and paleogeographic implications". Journal of South American Earth Sciences. 98: Article 102433. Bibcode:2020JSAES..9802433S. doi:10.1016/j.jsames.2019.102433. S2CID 213220168.

[96] Mariel Ferrari; Robert B. Blodgett; Montana S. Hodges; Christopher L. Hodges (2020). "Early Jurassic (middle Hettangian) marine gastropods from the Pogibshi Formation (Alaska) and their paleobiogeographical significance". Andean Geology. 47 (3): 559–576. doi:10.5027/andgeoV47n3-3278. hdl:11336/127652.

[97] Sven N. Nielsen; Francisca A. Ampuero (2020). "The Lower Miocene Mitridae (Gastropoda) of Chile". Ameghiniana. 57 (3): 255–265. doi:10.5710/AMGH.18.04.2020.3330. S2CID 219006497.

[PPSerbianLakeSystem-98] Thomas A. Neubauer; Oleg Mandic; Gordana Jovanović; Mathias Harzhauser (2020). "The Serbian Lake System: a stepping stone for freshwater molluscs in the middle Miocene". Papers in Palaeontology. 6 (4): 533–569. Bibcode:2020PPal....6..533N. doi:10.1002/spp2.1308.

[Carnets6Pseudoneptunea-99] Olivier Gain; Laurent Belliard (2020). "Occurrence du genre Pseudoneptunea (Mollusca, Caenogastropoda) dans l'Eocène Moyen du Cotentin (Manche, France) et dans le Thanétien du Bassin de Paris". Carnets de Voyages Paléontologiques dans le Bassin Anglo-Parisien. 6: 131–142. ISBN 978-2-9538000-6-7.

[100] Bernard Manuel Landau; Anton E. Breitenberger; Mathias Harzhauser (2020). "Rotatrigonostoma reinholdkunzi, gen.nov., spec.nov., an elusive trigonostomid group unveiled (Gastropoda, Cancellariidae)". Basteria. Journal of the Netherlands Malacological Society. 84 (4–6): 135–140.

[Schilderina-101] Luc Dolin; Olivier Aguerre (2020). "Description de deux espèces de Schilderina n. gen. (Mollusca, Caenogastropoda, Cypraeoidea) du Serravallien (Miocène moyen) du Béarn (Pyrénées-Atlantiques, France)". Bulletin de la Société Linnéenne de Bordeaux. 48 (1): 83–92.

[102] Daniel L. Geiger; James L. Goedert (2020). "Scissurella nesbittae, new species, from the Gries Ranch Formation, Lewis County, Washington State (Gastropoda: Vetigastropoda: Scissurellidae)". Zootaxa. 4759 (4): 593–596. doi:10.11646/zootaxa.4759.4.11. PMID 33056901.

[103] Henry J. L. Gard (2020). "A new species of fossil Scutus Montfort, 1810 from New Zealand (Mollusca: Gastropoda: Fissurellidae)". Molluscan Research. 40 (3): 223–230. Bibcode:2020MollR..40..223G. doi:10.1080/13235818.2020.1741069. S2CID 216322575.

[104] Maurizio Sosso; Luca Bertolaso; Bruno Dell’Angelo (2020). "A new species of Seguenzia Jeffreys (Mollusca: Vetigastropoda) from the Miocene (Tortonian) of northern. Italy" (PDF). Bollettino Malacologico. 56 (1): 101–106.

[105] Andrea Checchi; Fiorenzo Zamberlan; Riccardo Alberti (2020). "Una nuova specie di Semicypraea Schilder, 1936 (Mollusca, Cypraeoidea) dell'Eocene di "Cava Rossi" di Monte di Malo (Vicenza, NE Italy)" (PDF). Studi e Ricerche - Associazione Amici del Museo - Museo Civico "G. Zannato" Montecchio Maggiore (Vicenza). 27: 11–17.

[106] Bernard Manuel Landau; J.G.M. Raven; Anton E. Breitenberger; Aart Marinus Dekkers (2020). "Semiricinula preturbinoides spec. nov., a new species from the Miocene of Java (Gastropoda, Muricidae)". Basteria. Journal of the Netherlands Malacological Society. 84 (4–6): 131–134.

[107] D. F. Hoeksema; G. F. Simons (2020). "Skenea wesselinghi spec. nov., a new marine gastropod from the Pliocene of the southern North Sea Basin (Vetigastropoda, Trochoidea, Skeneidae)". Vita Malacologica. 19.

[108] Aart Marinus Dekkers; Virgilio Liverani; Stjepan Coric; Stephen J. Maxwell; Bernard Manuel Landau (2020). "A new genus for Indo-Pacific fossil strombids, and two new species from the Miocene of Java and Borneo (Caenogastropoda, Stromboidea)". Basteria. Journal of the Netherlands Malacological Society. 84 (1–3): 1–9.

[Vermetujanulus-109] Frank Walther; Klaus Groh (2020). "Description of a new genus and two new species of land snail (Gastropoda: Gastrodontidae, Geomitridae) from the late Pleistocene of the island Porto Santo (Madeira Archipelago)". Archiv für Molluskenkunde: International Journal of Malacology. 149 (1): 5–12. doi:10.1127/arch.moll/149/005-012. S2CID 225733185.

[Muscatella-110] Simon Schneider; Heinz A. Kollmann; Martin Pickford (2020). "Late Cretaceous to ?Paleocene freshwater, brackish-water and marine molluscs from Al-Khodh, Oman". Bulletin of Geosciences. 95 (2): 179–204. doi:10.3140/bull.geosci.1768.

[111] Takuma Haga (2020). "First Strebloceras (Mollusca: Gastropoda: Caecidae) from the middle Pleistocene of Japan" (PDF). Science Report of the Toyohashi Museum of Natural History. 30: 1–19.

[112] David P. Berschauer; David B. Waller (2020). "A new Siphocypraea species from the Immokalee Reef Tract (Unit 2) of the Tamiami Formation, Florida". The Festivus. 52 (2): 139–145. doi:10.54173/F522139. S2CID 242425579.

[Festivus523-113] E. J. Petuch; David P. Berschauer (2020). "Fossil species of Subpterynotus Olsson and Harbison, 1953 (Gastropoda: Muricidae: Muricopsinae) from southern Florida". The Festivus. 52 (3): 245–252. doi:10.54173/F523245. S2CID 239283251.

[114] Dietrich Kadolsky (2020). "Early Miocene land and freshwater gastropods from the karst fissure filling Tomerdingen 1 (southern Germany)". Palaeodiversity. 13 (1): 11–23. doi:10.18476/pale.v13.a2.

[115] Ting-ting Yu (2020). "New material of terrestrial gastropods from mid-Cretaceous Burmese amber". Acta Palaeontologica Sinica. 59 (1): 43–48. doi:10.19800/j.cnki.aps.2020.01.005 (inactive 1 November 2024).{{cite journal}}: CS1 maint: DOI inactive as of November 2024 (link)

[JPBalashov-116] Igor Balashov (2021). "The first records of mollusks from mid-Cretaceous Hkamti amber (Myanmar), with the description of a land snail, Euthema myanmarica n. sp. (Caenogastropoda, Cyclophoroidea, Diplommatinidae)". Journal of Paleontology. 95 (5): 994–1003. Bibcode:2021JPal...95..994B. doi:10.1017/jpa.2021.26. S2CID 233690461.

[PR241Turbo-117] Tomoki Kase; Susumu Tomida; Keisuke Inoue; Masahito Kadota (2020). "New species of Turbo (Marmarostoma) (Gastropoda, Turbinidae) from the Miocene limestone in central Japan: a window into the Miocene marine biodiversity in the northeastern Philippine Sea". Paleontological Research. 24 (1): 14–25. doi:10.2517/2019PR002. S2CID 209522912.

[AC19Hawke-118] Angus L. Hawke (2020). "Two new species of Umbilia (Caenogastropoda: Cypraeidae) from the Australian Miocene". Acta Conchyliorum. 19: 15–22.

[AGSVexillum-119] Radoslav Biskupič (2020). "A new evidence of Vexillum (Gastropoda: Costellariidae) from the middle Miocene (Serravallian) of the Vienna Basin (Slovakia)". Acta Geologica Slovaca. 12 (2): 75–88.

[120] Stefano Dominici; Mariagabriella Fornasiero; Luca Giusberti (2020). "The largest known cowrie and the iterative evolution of giant cypraeid gastropods". Scientific Reports. 10 (1): Article number 21893. Bibcode:2020NatSR..1021893D. doi:10.1038/s41598-020-78940-9. PMC 7736312. PMID 33318588.

[121] Katja T. C. A. Peijnenburg; Arie W. Janssen; Deborah Wall-Palmer; Erica Goetze; Amy E. Maas; Jonathan A. Todd; Ferdinand Marlétaz (2020). "The origin and diversification of pteropods precede past perturbations in the Earth's carbon cycle". Proceedings of the National Academy of Sciences of the United States of America. 117 (41): 25609–25617. Bibcode:2020PNAS..11725609P. doi:10.1073/pnas.1920918117. PMC 7568333. PMID 32973093.

[Adelfia-122] Maximiliano Jorge Alvarez; Claudia Julia del Río (2020). "Phylogeny of the Eocene Antarctic Tapetinae Gray, 1851 (Bivalvia, Veneridae) from the La Meseta and Submeseta formations". Journal of Paleontology. 94 (5): 799–818. Bibcode:2020JPal...94..799A. doi:10.1017/jpa.2020.30. S2CID 221355013.

[Araripevellia-123] M.G. Rodrigues; S.A. Matos; F.G. Varejão; F.T. Fürsich; L.V. Warren; M.L. Assine; M.G. Simões (2020). "Short-lived "Bakevelliid-Sea" in the Aptian Romualdo Formation, Araripe Basin, northeastern Brazil". Cretaceous Research. 115: Article 104555. Bibcode:2020CrRes.11504555R. doi:10.1016/j.cretres.2020.104555. S2CID 224946077.

[Quadratotrigoniinae-124] ^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k Michael R. Cooper (2020). "On the Quadratotrigoniinae (Trigoniida: Myophorelloidea), their palaeobiogeography, evolution and classification". Durban Natural Science Museum Novitates. 39: 1–48.

[Araripenaia-125] Victor R. da Silva; Filipe G. Varejão; Suzana A. Matos; Mariza G. Rodrigues; Franz T. Fürsich; Aleksandra Skawina; Simon Schneider; Lucas V. Warren; Mario L. Assine; Marcello G. Simões (2020). "New freshwater mussels (Bivalvia, Unionida) with potential trigonioidid and hyriid affinities from the Early Cretaceous of Brazil". Geobios. 61: 41–54. Bibcode:2020Geobi..61...41D. doi:10.1016/j.geobios.2020.06.001. S2CID 225792601.

[126] Kazutaka Amano; Hiroshi Kurita (2020). "A new species of Arca (Bivalvia: Arcidae) from the lower Miocene Asahi Formation on the Japan Sea side of central Honshu, with remarks on the westward faunal migration from the eastern Pacific". The Nautilus. 134 (3–4): 132–137.

[NJGPA2971bivalves-127] Oleg Mandic; Simon Schneider; Mathias Harzhauser; Wolfgang Danninger (2020). "Bivalves from the Innviertel Group of Allerding in the North Alpine Foreland Basin (lower Miocene, Upper Austria)". Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen. 297 (1): 47–100. doi:10.1127/njgpa/2020/0914. S2CID 225636458.

[128] István Szente (2020). "A remarkable invertebrate fossil assemblage from the Lower Triassic Werfen Formation of the Totes Gebirge (Styria, Austria)" (PDF). Jahrbuch der Geologischen Bundesanstalt. 160 (1–4): 227–239.

[129] Victor R. da Silva; Filipe G. Varejão; Suzana A. Matos; Franz T. Fürsich; Aleksandra Skawina; Simon Schneider; Lucas V. Warren; Mario L. Assine; Marcello G. Simões (2020). "Cratonaia novaolindensis gen. et sp. nov. (Unionida, Silesunionoidea) from the Aptian of Brazil (Araripe Basin), and its implications for the early evolution of freshwater mussels". Cretaceous Research. 107: Article 104275. Bibcode:2020CrRes.10704275D. doi:10.1016/j.cretres.2019.104275. S2CID 210312056.

[Cristaflabellum-130] Michael Hautmann; Evelyn Friesenbichler; Eugen Grădinaru; Romain Jattiot; Hugo Bucher (2020). "New Triassic Aviculopectinoidea (Bivalvia), with notes on the taxonomic concept of the superfamily" (PDF). Journal of Paleontology. 95 (2): 291–297. doi:10.1017/jpa.2020.79. S2CID 225161034.

[aremorica-131] Jean-Michel Pacaud (2020). "Gibbolucina aremorica nom. nov. (Mollusca, Bivalvia, Lucinidae), un nouveau nom de remplacement pour Lucina profunda Dufour, 1881 non Deshayes, 1850, non White, 1881". Folia Conchyliologica. 58: 35–39.

[Eothyasira-132] ^ ^a ^b ^c ^d ^e ^f Baran Karapunar; Winfried Werner; Franz T. Fürsich; Alexander Nützel (2020). "Taxonomy and palaeoecology of the Early Jurassic (Pliensbachian) bivalves from Buttenheim, Franconia (Southern Germany)". Palaeontographica Abteilung A. 318 (1–4): 1–127. Bibcode:2020PalAA.318....1K. doi:10.1127/pala/2020/0098. S2CID 225589507.

[133] I. N. Kosenko; E. K. Metelkin (2020). "Early Cretaceous oysters from Mangyshlak: taxonomic composition, stratigraphic and paleobiogeographical distribution". Paleontological Journal. 54 (3): 230–242. Bibcode:2020PalJ...54..230K. doi:10.1134/S0031030120030077. S2CID 219958635.

[134] Charles L. Powell, II; Cheryl D. Millard; Christine Garcia (2020). "A new Lyropecten (Pectinidae, Bivalvia, Mollusca) from the central California Miocene, USA". PaleoBios. 37: ucmp_paleobios_47813.

[135] Takashi Matsubara; Toshikazu Ohta; Yuuki Nakamura; Naotomo Kaneko; Yasuhiro Ito (2020). "Deep-sea fossil molluscan assemblages from a new locality in the lowest Miocene Tsubetsu Formation in the Tsubetsu area, eastern Hokkaidō, Japan". Bulletin of the Kitami City Museums. 1: 1–27.

[Mezounio-136] V. A. Zakharov; A. P. Ippolitov; N. G. Zverkov; P. A. Beznosov; D. N. Kiselev (2020). "Middle Jurassic retroceramids and unionids from the Izhma River Basin, north of European Russia". Stratigraphy and Geological Correlation. 28 (4): 381–401. Bibcode:2020SGC....28..381Z. doi:10.1134/S0869593820040115. S2CID 220980233.

[CRMonopleura-137] Jean-Pierre Masse; Mukerrem Fenerci-Masse (2020). "Taxonomy and biostratigraphy of Early Cretaceous species of the genus Monopleura Matheron (Hippuritida, Monopleuridae) of the Mediterranean region". Cretaceous Research. 108: Article 104287. Bibcode:2020CrRes.10804287M. doi:10.1016/j.cretres.2019.104287. S2CID 210281110.

[138] Kazutaka Amano; Hiroshi Kurita (2020). "A new Paleocene species of Myonera (Bivalvia: Cuspidariidae) from eastern Hokkaido, northern Japan". The Nautilus. 134 (1): 51–56.

[PalZPennsylvanianBivalvia-139] Pamela Díaz Saravia; Carlos R. González (2020). "New Pennsylvanian Bivalvia (Mollusca), the Early Permian glaciation and the Carboniferous–Permian boundary in western Argentina". PalZ. 94 (4): 675–695. Bibcode:2020PalZ...94..675D. doi:10.1007/s12542-020-00517-8. S2CID 218531211.

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