出典:Wikipedia
出典:『Wikipedia』 (2011/04/20 06:24 UTC 版)
The Caseasauria are one of the two main clades of early synapsids, the other being the Eupelycosauria. They are currently known only from the Permian, and include two superficially different families, the small insectivorous or carnivorous Eothyrididae, and the large herbivorous Caseidae