Osteichthyes - Caseasauria - Caseidae

Synonym: Trispondylus Williston 1910 [replaced name]

Parent taxon: Caseidae according to R. B. J. Benson 2012

See also Carroll 1988, Hay 1930, Olson 1968, Reisz 1986, Romer and Price 1940, Williston 1910 and Williston 1913

Sister taxa: Alierasaurus, Angelosaurus, Arisierpeton, Callibrachion, Casea, Caseoides, Caseopsis, Chelichnus, Cotylorhynchus, Datheosaurus, Ennatosaurus, Eocasea, Euromycter, Lalieudorhynchus, Martensius, Oromycter, Phreatophasma, Ruthenosaurus

Subtaxa: Trichasaurus texensis

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Type: Trispondylus texensis

Ecology: planktonic suspension feeder

Distribution: found only at Craddock Bonebed, Brush Creek, 38 (Arroyo Formation) (Permian of Texas)

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Specimen images are retrieved through the ePANDDA API.