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†family Ophiacodontidae Nopsca 1923 (ophiacodont)

Osteichthyes - Synapsida

PaleoDB taxon number: 38884

Synonyms: Clepsydropidae Cope 1878 (no. 54974), Clepsydropsidae Cope 1878 (no. 361782), Poliosauridae Case 1907 (no. 137868)

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

Sister taxa: Edaphosauridae, Haptodontiformes, Sphenacomorpha, Varanopidae

Subtaxa: Archaeothyris, Clepsydropinae, Clepsydrops, Embolophorus, Ophiacodon, Varanosaurus

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Ecology: