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meaning: "Large stone"
Named By: Paul Penkalski in 2013
Time Period: Late Cretaceous, 74 Ma
Location: USA, Montana - Two Medicine Formation
Size: Estimated up to 6 meters long
Diet: Herbivore
Fossil(s): Skull and partial post cranial skeleton
Classification: | Chordata | Reptilia | Dinosauria | Ornithischia | Thyreophora | Ankylosauria | Ankylosauridae | Ankylosaurinae |

Oohkotokia ( OH-oh-ka-TOH-kee-a) is a genus of ankylosaurid dinosaur within the subfamily Ankylosaurinae. It is known from the upper levels of the Two Medicine Formation (late Campanian stage, about 74 Ma ago) of Montana, United States. The discovery of Oohkotokia supports that Ankylosaurine dinosaurs existed and flourished continuously in Montana and/or Alberta throughout the late Campanian and early Maastrichtian stages in the Late Cretaceous period. It was a large, heavily built, quadrupedal, herbivore, that could grow up to 6 m (19.7 ft) long.

Read more about Oohkotokia at Wikipedia
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