Named By: William L. Parsons & Kirsten M. Parsons - 2009.
Classification: Chordata, Reptilia, Dinosauria, Ornithischia, Thyreophora, Ankylosauria, Nodosauridae.
Species: T. cooneyorum (type).
Size: Complete skull about 32 centimetres long.
Known locations: USA, Montana - Cloverly Formation.
Time period: Aptian/Albian of the Cretaceous.
Fossil representation: Partial skull, two fragmented osteoderms and two partial ribs.
is a genus of nodosaur
that lived in what is now Montana during the
early Cretaceous period. Best known from an incomplete skull,
Tatankacephalus has been interpreted as a close
relative to the better
known nodosaurid dinosaur Gastonia.
A different genus of nodosaurid
dinosaur from the same location as Tatankacephalus
though it has been clearly established that Tatankacephalus
separate from this genus. This is because although the holotype skull
of Tatankacephalus was only partially preserved,
it was preserved
free from compression damage and distortion, making it much easy to
study the features of the skull with certainty.
Tatankacephalus is a combination for the Tatanka word for Bison and the Ancient Greek word for head, so the name comes together and translates to English as ‘Bison head. The type species name T. cooneyorum is in honour of the family of John Patrick Cooney. Tatankacephalus should not be confused with the similarly named dinosaur, Tatankaceratops.
- A new ankylosaur (Dinosauria: Ankylosauria) from the Lower Cretaceous Cloverly Formation of central Montana. - Canadian Journal of Earth Sciences 46(10):721-738. - William L. Parsons & Kirsten M. Parsons - 2009.