synapsid

Noun
  1. Extinct reptile having a single pair of lateral temporal openings in the skull (synset 101722044)
    is a type of: reptile, reptilian - any cold-blooded vertebrate of the class Reptilia including tortoises, turtles, snakes, lizards, alligators, crocodiles, and extinct forms
    subtypes:
    • protomammal, therapsid - probably warm-blooded; considered direct ancestor of mammals
    • ictodosaur - intermediate in form between the therapsids and most primitive true mammals
    • pelycosaur - large primitive reptile having a tall spinal sail; of the Permian or late Paleozoic in Europe and North America
    • edaphosaurus - heavy-bodied reptile with a dorsal sail or crest; of the late Paleozoic
    • dimetrodon - carnivorous dinosaur of the Permian in North America having a crest or dorsal sail
    same as: synapsid reptile

Found on Word Lists

Other Searches