- Therapsida, order Therapsida - extinct mammal-like reptiles found inhabiting all continents from the mid Permian to late Triassic
--1 is a kind of animal order
--1 is a member of Synapsida, subclass Synapsida
--1 has members:therapsid, protomammal; Chronoperates, genus Chronoperates; Cynodontia, division Cynodontia; Dicynodontia, division Dicynodontia