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 | ||