Stratigraphic chart of the lower Permian (partial)
Content updated October 16, 2005
EDAPHOSAURUS
Synapsida-Eupelycosauria-Edaphosauridae
Above: picture of a Edaphosaurus scapulocoracoid in posterior view showing the supraglenoid foramen between the ridges of supraglenoid buttress. From Ryan Sandstone, Wellington Formation, near Waurika - Jefferson Co. Oklahoma. Lower Permian.
Abbreviations: fcor, coracoid foramen; fsgl, supraglenoid foramen, glen, glenoid cavity; scapb, scapular blade