Outline: a typical ankylosaur

Two Medicine Fm., MontanaNamed 2014

Oohkotokia

OH-oh-ko-TOH-kee-a

Type species Oohkotokia horneri

Lived
84 to 72 million years ago, Late Cretaceous
Diet
Herbivore
Group
Ankylosaurs, Ankylosauridae
Found in
United States
Named by
Penkalski 2014

Where its fossils were found

The evidence

Today

4 finds

80 million years ago

Map: C. R. Scotese, PALEOMAP

Field notes

About Oohkotokia

What it was like

Oohkotokia was an ankylosaur, a low, armored plant eater with a tail club. It had broad armor plates and low, rounded spikes.

Its world

It lived in the Late Cretaceous, in what is now Montana. It comes from the Two Medicine Formation, where it shared the land with the horned Achelousaurus, the duckbill Maiasaura and the tyrannosaur Daspletosaurus.

How it was found

Penkalski named Oohkotokia in 2014. The type species is Oohkotokia horneri. Its name comes from a local native word for a large stone. Some scientists think it could be the same animal as Scolosaurus.

Lived alongside

Found in the same rock formations

Close relatives

Other members of Ankylosauridae

Sources: WikidataNamed in: P. Penkalski. 2014. A new ankylosaurid from the late Cretaceous Two Medicine Formation of Montana, USA. Acta Palaeontologica Polonica