Oohkotokia horneri

† Oohkotokia horneri is the type species of Oohkotokia, a Late Cretaceous ankylosaurid from Montana. Known from a nearly complete skull, this heavily armored herbivore ~5 m long had a wide body and a bony tail club.

Diet & Feeding

Herbivore

Oohkotokia horneri was a plant-eating dinosaur. Herbivores typically fed on ferns, cycads, conifers, and other vegetation available during their era. Many herbivorous dinosaurs developed specialized teeth and digestive systems for processing tough plant material.

Time Period

Cretaceous Late Mesozoic Era

Oohkotokia horneri lived during the Cretaceous Late period of the Mesozoic Era, approximately 100.5 to 66.0 million years ago.

The final age of dinosaurs, featuring iconic species like Tyrannosaurus rex, Triceratops, and Velociraptor. Dinosaurs reached their peak diversity before the catastrophic asteroid impact at the Chicxulub crater ended the Mesozoic Era.