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 Introduction

LEPOSPONDYLI

EUREPTILIA

SYNAPSIDA

PARAREPTILIA

DIADECTOMORPHA

ANTHRACOSAUROIDEA

TEMNOSPONDYLI

UNIDENTIFIED TETRAPODS

Stratigraphic chart of the lower Permian (partial)

Phylogenetic Relationships

Content updated October 16, 2005

 

RICHARDS SPUR UNIDENTIFIED  SKULL

 

Above, picture of the maxilla fragment with the teeth of the unidentified partial skull.  From Richards Spur (Fort Sill, Dolese Quarry), Comanche Co. - Oklahoma. Lower Permian.