pelycosaur
/ˈpelɪkəʊsɔː(r)/noun
1- a large fossil reptile of the late Carboniferous and Permian periods, typically having a line of long bony spines along the back supporting a sail-like crest盘龙。
1.1
- Order Pelycosauria, subclass Synapsida: several families and genera, including Dimetrodon and Edaphosaurus.盘龙目, 下孔亚纲：数科, 数属, 包括异齿龙属和基龙属。
词源
mid 20th cent.: from Greek pelux, peluk-'bowl'+sauros 'lizard'.