†unranked clade Diadectomorpha Watson 1917

Osteichthyes - Cotylosauria

Alternative spelling: Diadectimorpha

Parent taxon: Cotylosauria according to M. Laurin and R. R. Reisz 1995

See also Colbert 1946, Gauthier et al. 1989, Gauthier et al. 1988, Haughton and Brink 1954, Huene 1954, Kissel and Lehman 2002, Kuhn 1946, Lewis and Vaughn 1965, Martens et al. 2005, Olson 1947, Price 1947 and Romer 1956

Sister taxa: Amniota, Chamasaurus, Diadectosauria, Eunotosauria, Labidosauria, Limnoscelia, Pantyloidea, Pantylosauria, Pariotichidae, Solenodonsauridae

Subtaxa: Diadectidae Limnoscelidae Limnoscelops Limnoscelops longifemur Millerinidae Tseajaiidae

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Distribution:

• Leonard of United States (2: Oklahoma collections)

• Wolfcamp of United States (20: Colorado, New Mexico, Oklahoma, Texas, Utah)

• Rotliegendes of Poland (1)

• Permian of China (1), Germany (2), Italy (1), United States (37: Nebraska, New Mexico, Ohio, Oklahoma, Texas, Utah)

• Virgilian of United States (3: New Mexico, Oklahoma)

• Carboniferous to Permian of United States (1: New Mexico)

• Carboniferous of Canada (1: Nova Scotia), United States (3: Colorado, Pennsylvania)

Total: 72 collections including 92 occurrences

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