Describer

Ott & Larson 2010

Time

Cretaceous Late Maastrichtian

Classification

Ornithischia Genasauria Cerapoda Marginocephalia Ceratopia Neoceratopia Ceratopidae Chasmosaurinae

Diet

Herbivore

Fossilsite

Hell Creek Formation, Harding County, South Dakota, US

Info

Body length

3.3-9.8 ft (1-3 m)?

Holotype

BHI6226 Partial skull

Etymology

Generic name: Tatanka is the Lakota name for the American Bison) \\\"Buffalo horn face\\\" | specific name in honour of Stan and Steve Sacrisonów the discoverers of the specimen.

Longrich (2011) noted that this animal could represent a dwarf Triceratops species or simply a Triceratops specimen with a developmental disorder which caused it to stop growing prematurely.