Meaning | Extinct reptile having a single pair of lateral temporal openings in the skull. |
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Synonym | synapsid reptile |
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Narrower | dimetrodon | carnivorous dinosaur of the Permian in North America having a crest or dorsal sail |
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edaphosaurus | Heavy-bodied reptile with a dorsal sail or crest |
ictodosaur | Intermediate in form between the therapsids and most primitive true mammals |
pelycosaur | large primitive reptile having a tall spinal sail |
therapsid, protomammal | probably warm-blooded |
Broader | reptile, reptilian | Any cold-blooded vertebrate of the class Reptilia including tortoises, turtles, snakes, lizards, alligators, crocodiles, and extinct forms |
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Spanish | sinápsido |
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Catalan | sinàpsid |
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