Taxa Count: 11

SPHENACODONTIDAE

Ctenorhachis jacksoni

Ctenospondylus

Cutleria wilmarthi

Dimetrodon

Dimetrodon gigashomogenes

Dimetrodon grandis

Dimetrodon incisivus

Dimetrodon limbatus

Dimetrodon loomisi

Genus

Sphenacodon