LIST OF THE RICHARDS SPUR (FORT SILL) TETRAPOD PALEOFAUNA
Stratigraphic chart of the lower Permian (partial)
Content updated January 23, 2006
STEREOSTERNUM TUMIDUM
(Amniote inc.sedis? Basal Parareptile?
Mesosauridae
Above: Stereosternum complete skeleton, with enlarged pictures of hindlimb and forelimb. From Irati Formation - Brasil.