| 单词 | synapsid reptile |
| 释义 | synapsid reptile (extremely rare) n WORD FAMILY synapsid reptile n extinct reptile having a single pair of lateral temporal openings in the skull Syn|Hypo|Hyper synapsid protomammal, therapsid probably warm-blooded; considered direct ancestor of mammals ictodosaurintermediate in form between the therapsids and most primitive true mammals pelycosaurlarge primitive reptile having a tall spinal sail; of the Permian or late Paleozoic in Europe and North America edaphosaurusheavy-bodied reptile with a dorsal sail or crest; of the late Paleozoic dimetrodoncarnivorous dinosaur of the Permian in North America having a crest or dorsal sail Chronoperates paradoxusshrew-sized protomammal from the Alberta region of Canada; from about 55 million years ago (much more recent than other mammal-like reptiles) cynodontsmall carnivorous reptiles dicynodonta kind of therapsid reptile, reptilian any cold-blooded vertebrate of the class Reptilia including tortoises, turtles, snakes, lizards, alligators, crocodiles, and extinct forms |
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