Name: Tatankacephalus ‭(‬Bison head‭)‬.
Phonetic: Tah-tan-kah-sef-ah-luss.
Named By: William L.‭ ‬Parsons‭ & ‬Kirsten M.‭ ‬Parsons‭ ‬-‭ ‬2009.
Classification: Chordata,‭ ‬Reptilia,‭ ‬Dinosauria,‭ ‬Ornithischia,‭ ‬Thyreophora,‭ ‬Ankylosauria,‭ ‬Nodosauridae.
Species: T.‭ ‬cooneyorum‭ (‬type‭)‬.
Diet: Herbivore.
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.

       Tatankacephalus 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 is Sauropelta,‭ ‬though it has been clearly established that Tatankacephalus is 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.

Further reading
-‭ ‬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.


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