Thesaurus: pelycosaur
large primitive reptile having a tall spinal sail; of the Permian or late Paleozoic in Europe and North America
Related headwords
AmericadefinitionEuropedefinitionlargedefinitionlatedefinitionnorthdefinitionpaleozoicdefinitionpermiandefinitionprimitivedefinitionreptiledefinitionsaildefinitionspinaldefinitiontalldefinitionPelycosauriafamilypelycosaurianfamilypelycosaursfamilypelvesneighborpelvicneighborpelvic archneighborpelvic cavityneighborpelvic finneighborpelvic girdleneighborpelvimeterneighborpelvimetryneighborpelvisneighborpelvisesneighborPembrokeneighborpembroke tableneighborpemicanneighbor