Triceratops Marsh, 1889 sp.

Remarks

• Collection:   Grant Elliott.  Grant told us that Chris and Hillary Morrow found the bone on their ranch.

• Formation:  Montana Group, Hell Creek Formation

• Location:     Montana

Close up of bite marks

General Info

Synonyms (a few reports from the literature)

• 1889 Triceratops Marsh

• 1891 Sterrholophus Marsh

• 1905 Diceratops Hatcher

• 1991 Triceratops Marsh; Weishampel, Dodson, and Osmólska

Stratigraphic Occurrence

• Montana Group, Laramie Formation of Colorado

• Montana Group, Evanston Formation of Wyoming

• Montana Group, Lance Formation of Wyoming

• Montana Group, Hell Creek Formation of Montana and South Dakota

• Frenchman Formation of Saskatchewan, Canada

• Edmonton Group, Scollar Formation of Alberta, Canada

Age

• The type specimen, Triceratops horridus Marsh lived during the latest Cretaceous.

Geographic Occurrence (not an all-inclusive list)

• Alberta, Canada

• Colorado

• Montana

• Saskatchewan, Canada

• South Dakota

• Wyoming

Remarks

       For more information on Triceratops, see:

• Weishampel, D. B.; Dodson, P.; Osmólska, H., eds.  1990.  The Dinosauria.  Berkeley:  University of California Press (several chapters).