†family Eothyrididae Romer and Price 1940 (synapsid)
Osteichthyes - Caseasauria - Eothyrididae
Alternative spelling: Eothyridae
Full reference: A. S. Romer and L. I. Price. 1940. Review of the Pelycosauria. Geological Society of America Special Paper 28:1-538
Parent taxon: Caseasauria according to H. C. Maddin et al. 2008
See also Brocklehurst et al. 2016, Carroll 1988, Kemp 1982, Kuhn 1946, Kuhn 1966, Langston 1965, Reisz 1986 and Romer and Price 1940
Sister taxon: Caseidae
Subtaxa: Eothyris Oedaleops Vaughnictis
Ecology:
Distribution:
• Permian of United States (3: Colorado, Texas collections)
• Carboniferous to Permian of United States (1: New Mexico)
Total: 4 collections including 5 occurrences