English noun: Synapsida | |||
1. | Synapsida (animal) extinct reptiles of the Permian to Jurassic considered ancestral to mammals | ||
Synonyms | subclass Synapsida | ||
Broader (hypernym) | class | ||
Member holonym | Ictodosauria, order Ictodosauria, order Pelycosauria, order Therapsida, Pelycosauria, Therapsida | ||
Member meronym | class Reptilia, Reptilia | ||