any extinct reptile of the order Therapsida, of Permian to Triassic times: considered to be the ancestors of mammals
Word origin
C20: from New Latin Therapsida, from Greek thēr beast + Latin apsis arch
Examples of 'therapsid' in a sentence
therapsid
An undetermined track shows features consistent with possible therapsid producers.
Lorenzo Marchetti, Matteo Belvedere, Paolo Mietto 2017, 'Lopingian tetrapod footprints from the Venetian Prealps, Italy: New discoveries ina largely incomplete panorama', Acta Palaeontologica Polonicahttp://www.app.pan.pl/archive/published/app62/app003922017.pdf. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
However, the anatomy of some therapsid groups remains obscure.
Ricardo Araújo, Vincent Fernandez, Michael J. Polcyn, Jörg Fröbisch, Rui M.S. Martins 2017, 'Aspects of gorgonopsian paleobiology and evolution: insights from the basicranium,occiput, osseous labyrinth, vasculature, and neuroanatomy', PeerJhttps://peerj.com/articles/3119.pdf. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)