LIST OF THE RICHARDS SPUR (FORT SILL) TETRAPOD PALEOFAUNA
Stratigraphic chart of the lower Permian (partial)
Content updated April 24, 2006
DIPLOCAULUS
Lepospondyli-Nectridea-Diplocaulidae
Above: picture, in anterior view, of the same Diplocaulus vertebra. From Ryan Sandstone, Wellington Formation, near Waurika - Jefferson Co. Oklahoma. Lower Permian.
Abbreviations: AAAS, anterior accessory articulating surface