Osteichthyes - Synapsida - Ophiacodontidae

Full reference: A. S. Romer. 1937. New genera and species of pelycosaurian reptiles. Proceedings of the New England Zoölogical Club 16:89-95

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

See also Carroll 1988 and Langston 1965

Sister taxa: Archaeothyris, Baldwinonus, Clepsydrops, Diopeus, Elcabrosaurus, Ophiacodon, Stereorhachis, Varanosaurus, Clepsydropinae, Scoliomus, Arribasaurus

Subtaxa: Stereophallodon ciscoensis

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Ecology:

Distribution: found only at Watson quarry, southeast of Windthorst (Permian of Texas)

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Specimen images are retrieved through the ePANDDA API.