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†subfamily Sphenacodontinae Romer 1936 (synapsid)

Osteichthyes - Synapsida - Sphenacodontidae

PaleoDB taxon number: 136922

Full reference: A. S. Romer. 1936. Studies on American Permo-Carboniferous reptiles. Problems of Paleontology 1:85-93

Parent taxon: Sphenacodontidae according to R. R. Reisz 1986

Sister taxa: Cryptovenator, Ctenorhachis, Dimetrodon kempae, Eosyodon, Eosyodon hudsoni, Secodontosaurinae, Varanopsinae

Subtaxa: Bathygnathus, Ctenospondylus, Dimetrodon, Macromerion, Neosaurus, Sphenacodon

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Type: Sphenacodon

Ecology: