Oohkotokia
Oohkotokia was a tank-like dinosaur covered in bony armour. It had a big club on its tail and horn-like bumps on its head. It lived in what is now Montana, USA, about 80 million years ago.15
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Fun facts
Oohkotokia had a median nasal plate on its snout, a smooth patch of bone that helped identify it.1
Its armour had a fine, pitted texture, unlike the rough bumps on some other ankylosaurs.1
The name Oohkotokia comes from the Blackfoot word for 'child' and 'stone', meaning 'child of the stone'.1
It lived at the same time as other ankylosaurs like Euoplocephalus and Scolosaurus, but in different layers of rock.1
This dinosaur was an ankylosaurine, a group of armoured dinosaurs with tail clubs.5
Most asked questions about Oohkotokia
?How big was Oohkotokia?
Oohkotokia could grow up to 5 metres (16 feet) long and weigh up to 2 metric tons (2.2 short tons).2
?Did Oohkotokia have a tail club?
Yes, like other ankylosaurids, Oohkotokia had a tail club made of two enlarged bone lumps at the end of its tail.4
?What did Oohkotokia eat?
Oohkotokia was a herbivore, meaning it ate plants.2
?When did Oohkotokia live?
Oohkotokia lived about 74 million years ago, during the late Campanian stage of the Late Cretaceous.2
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Myth buster
Myth: Oohkotokia is the same as Scolosaurus.
Truth: Some scientists think Oohkotokia might be a type of Scolosaurus, but others say the unique features of its skull armour show it is a separate genus.5
For dino experts
- Scientific name
- Oohkotokia
- Named by
- Penkalski 20145
- Group
- Armoured dinos
- Family / clade
- Ankylosauridae5
- Classification
- Ornithischia > Ankylosauria > Ankylosauridae > Thyreophora5
- Age of the rocks
- 84 to 72 million years (Campanian)5
- Rock formations
- Two Medicine5
- Countries
- USA5
- Fossil records
- 5 in the Paleobiology Database5
- Discovery
- Oohkotokia was named by Paul Penkalski in 2014. The first fossil was found in the Two Medicine Formation of Montana, USA, and is kept at the Museum of the Rockies.1
- Still debated
- Scientists still debate whether Oohkotokia is a separate genus or just a species of Scolosaurus.5
Where the facts come from
- A new ankylosaurid from the late Cretaceous Two Medicine Formation of Montana, USA - Acta Palaeontologica Polonica (app.pan.pl)
- Oohkotokia (en.wikipedia.org)
- Oohkotokia horneri | Dinosaur Database by DinoAnimals.com (dinoanimals.com)
- Oohkotokia - Wikipedia (en.m.wikipedia.org)
- Oohkotokia in The Paleobiology Database (CC BY 4.0): age, places, rock formations, classification.
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Ankylosaurus
Sauropelta
Pinacosaurus
Scutellosaurus
Struthiosaurus
Euoplocephalus
Tyrannosaurus
Triceratops
Velociraptor
Spinosaurus
Parasaurolophus
Pteranodon