Platecarpus tympaniticus Cope, 1869

Remarks  

• Collection:   Lee Garrison

• Formation:  Niobrara Group, Smoky Hill Chalk

• Location:     Gove County, Kansas

• Two vertebrae found in the middle of the formation.

General Info

Synonyms (general list of reports)

• 1865 ?Holcodus acutidens Leidy

• 1869 Platecarpus tympaniticus Cope

• 1872 = Platecarpus coryphaeus Cope

• 1899 = Platecarpus coryphaeus Cope; Osborn

• 1967 Platecarpus tympaniticus Cope; Russell

Stratigraphic Occurrence

• Niobrara Group, Smoky Hill Chalk of western Kansas

• Eutaw Formation of Mississippi

Age

• Platecarpus tympaniticus Cope is a Santonian mosasaur (~86 mya).

Geographic Occurrence (not an all-inclusive list)

• Gove County, KS

• Lowndes County, MS

Remarks

        For description see:

• Cope, E. D.  1869.  On the Reptilian Orders Pythonomorpha and Streptosauria.  Proceedings of the Boston Society of Natural History 12, 265.

• Osborn, H. F.  1899.  A complete mosasaur skeleton, osseous and cartilaginous.  Memoirs of the American Museum of Natural History 1 (4), 165-188.

• Russell, D. A.  1967.  Systematics and Morphology of American Mosasaurs (Reptilia, Sauria).  Peabody Museum of Natural History, Yale University Bulletin 23, 152-153.