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Stratigraphic chart of the lower Permian (partial) Content updated October 16, 2005
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RICHARDS SPUR UNIDENTIFIED CASEASAUR Synapsida - Caseasauria Below: pictures of a maxillary fragments, a premaxilla, two articulated dentaries, and multicuspid tooth of a tetrapod that could be considered a probable caseasaur on the basis of the presence of bulbous teeth that show multicuspid morphology, and a rostrum formed by the anteriorly tilted dorsal process of premaxilla. 1) Unidentified caseasaur: multicuspid tooth (enlarged in medial view) 2) Unidentified caseasaur: multicuspid tooth (enlarged in posterior view) 3) Unidentified caseasaur: premaxilla 4) Unidentified caseasaur: maxilla 1 5) Unidentified caseasaur: maxilla 2 6) Unidentified caseasaur: articulated dentaries
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