Triceratops prorsus (Marsh, 1890)
Sauropsida
Diapsida
Archosauria
Dinosauria
Ornithischia
Neornithischia
Marginocephalia
Ceratopsia (Horned Dinosaurs)
Ceratopsidae
Chasmosaurinae
Upper Maastrichtian, Late Cretaceous
Hell Creek Formation
United States (Montana, North Dakota, South Dakota, and Wyoming)
Length: 7.9 – 9.0 m
Everyone’s favorite walking billboard was a lot spikier and hornier (in every sense of the word) than you might remember him to be.
Thursday, August 13th, 2015
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