Cotylorhynchus
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Cotylorhynchus is an extinct genus of herbivorous caseid synapsids that lived during the late Lower Permian and possibly the early Middle Permian in what is now the states of Texas and Oklahoma. The l
Composite skeleton of Cotylorhynchus romeri (AMNH FARB 7517). The skull is a cast of specimen OMNH 04329 and the tail appears to be reassembled.
Life restoration of C. romeri
Cotylorhynchus romeri (Holotype OMNH 00637) from Navina, Logan County : right lateral and medial views of skull. Abbreviations : an, angular; co, coronoid; d, dentary; j, jugal; l, lacrimal; m, maxilla; n, nasal; pm, premaxilla; po, postorbital; pra, prearticular; prf, prefrontal; qj, quadratojugal; sp, splenial; su, surangular.
Caseasauria
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Caseasauria is one of the two main clades of early synapsids, the other being the Eupelycosauria. Caseasaurs are currently known only from the Late Carboniferous and the Permian, and include two super
Raranimus dashankouensis