Subclass Synapsida — synonyms, definition
1. subclass Synapsida (Noun)
1 synonym
Synapsida
1 definition
subclass Synapsida (Noun) — Extinct reptiles of the Permian to Jurassic considered ancestral to mammals.
1 type of
class
6 parts
Ictodosauria Pelycosauria Therapsida order Ictodosauria order Pelycosauria order Therapsida
2 parts of
Reptilia class Reptilia