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LIST OF THE RICHARDS SPUR (FORT SILL) TETRAPOD PALEOFAUNA Stratigraphic chart of the lower Permian (partial) Content updated April 24, 2006
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DIPLOCAULUS Lepospondyli-Nectridea-Diplocaulidae
Diplocaulus is a nectridean lepospondyl, the skull is dorsoventrally flattened with tabulars and squamosals expanded in posterolaterally directed horns. The trunk vertebrae have laterally compressed neural spines that interdigitate by accessory articulating surfaces, the posterior zygapophyses extend well posterior of neural spine giving at the vertebrae the characteristic inverted "Y" shape in dorsal aspect, the top of neural spine, contrary to Diploceraspis, is unornamented except for a deep crescent shaped pit positioned posteriorly. The area of articulation for the capitulum of the rib lies just below the transverse process.
1) Waurika Diplocaulus: vertebra in lateral view 2) Waurika Diplocaulus: same vertebra in dorsal view 3) Waurika Diplocaulus: same vertebra in ventral view |