Romeriscus

Romeriscus
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Order:	†Diadectomorpha
Family:	†Limnoscelidae
Genus:	†Romeriscus; Baird & Carroll, 1968
Species:	†R. periallus
Binomial name
	†Romeriscus periallus; Baird & Carroll, 1968

Romeriscus is a dubious genus of tetrapod, currently classified as in the family Limnoscelidae,^[1] found in the Lower Pennsylvanian Port Hood formation in Nova Scotia.^[2]

Romeriscus is known by one species, Romeriscus periallus, from a single holotype, YPM-PU16 482. The holotype specimen has both cranial and post-cranial remains and consists of a badly crushed skull and 25 pre-sacral vertebrae.

It was originally described in 1967 by Baird & Carroll and hypothesized be a limnoscelid due to its skull structure.^[2] In 1992, however, this claim was refuted by Laurin & Reisz, who state that the poor preservation of the skull makes such a claim impossible, and that due to its poor condition, the frontal and postfrontal portions of the skull cannot be properly identified as a limnoscelid.^[3] Laurin & Reisz came to the conclusion that while Romeriscus is a distinct genus, it cannot conclusively be classified as amniota, or limnoscelidae, instead classifying it as tetrapoda incertae sedis, and nomen dubium, as its status as a Romeriid is unclear.^[4]