Palaeotheriidae Plesiotapirus Caementodon Indolophus Helaletes Deperetella Eggysodon Hallensia Meniscotherium Gaindatherium Litolophus Protorohippus Paschatherium Notiotitanops Pappaceras Meninatherium Eodesmatodon Equoidea Aceratheriinae Rusingaceros Metamynodon Jozaria Anthracobune Hsanotherium Tapiroidea Nexuotapirus Mesolambdolophus Hipparion Hypohippus Hispanotherium Alicornops Aphelops Nakusia Miotapirus Meridiolophus Peraceras Metatelmatherium Teleolophus Cremohipparion Parelasmotherium Brachydiastematherium Hesperotherium Mesatirhinus Mesohippus Systemodon Astrohippus Mulkrajanops Victoriaceros Hyopsodontidae Phenacodontidae Sthenodectes Chaco…

omylus Copecion Iranotherium Olbitherium Bahinolophus Prosantorhinus Almogaver Plesiaceratherium Aceratherium Nanotitanops Paracolodon Rhodopagus Colodon Bugtirhinus Kenyatherium Tapiravus Protaceratherium Helaletidae Pakotitanops Gandheralophus Telmatherium Shennongtherium Metarhinus Nesorhinus Acritohippus Aralotherium Floridaceras Allacerops Nannippus Deperetellidae Miohippus Kalobatippus Duchesneodus Desmatippus Brachypotherium Homogalax Sivalhippus Pliohippus Menoceras Hyracotherium Paratapirus Haplohippus

Acerorhinus Haringtonhippus Diaceratherium Lambdotherium Archaeohippus Palaeosyops Heptodon Lartetotherium Paradiceros Lophiaspis Ancylopoda Obergfellia Pseudhipparion Ectocion Parahippus Sphenocoelus Gulfoceras Radinskya Isectolophidae Sifrhippus Aletodon Hyrachyus Megahippus Mesaceratherium Sinohippus Proboscidipparion Pliolophus Shansirhinus Cadurcodon Chemositia Protohippus Hyracodon Ceratotherium Calippus (mammal) Propalaeotherium Uintaceras Trigonias Ancylotherium Borissiakia Hippidion Nestoritherium Eurygnathohippus Cambaytherium Subhyracodon Ronzotherium Hippotherium Eotitanops Sinotherium Eohippus Protitanotherium Epihippus Anchitherium Metaschizotherium Kalimantsia Protapirus Tylocephalonyx Pl