Stratigraphic chart of the lower Permian (partial)
Content updated October 16, 2005
DIADECTES
Tetrapoda-Diadectomorpha
Above: picture of a Diadectes dentary in occlusal, lateral, and medial view. From Ryan Sandstone, Wellington Formation, near Waurika. Jefferson Co. - Oklahoma. Lower Permian.
Abbreviation: sp, symphysial pads