Thrinaxodontidae

Thrinaxodontidae Temporal range: Middle Permian- Early Triassic, 261–247 Ma PreЄ Є O S D C P T J K Pg N
Skull and neck vertebrae of Thrinaxodon liorhinus in CosmoCaixa Barcelona
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Order:	Therapsida
Suborder:	Cynodontia
Clade:	Epicynodontia
Family:	†Thrinaxodontidae Watson and Romer, 1956
Genera
Nanictosaurus Nanocynodon Novocynodon Thrinaxodon

Thrinaxodontidae is an extinct family of cynodonts that includes the genera Thrinaxodon, Nanictosaurus, Nanocynodon, and Novocynodon, and possibly Bolotridon and Platycraniellus. All thrinaxodontids share a bony secondary palate. Thrinaxodontids are basal members of the cynodont clade Epicynodontia. Some studies consider the family a paraphyletic group, representing an evolutionary grade of basal epicynodonts rather than an actual clade.