Edmontonia

† Edmontonia is a large nodosaurid ankylosaur from the Late Cretaceous (Campanian–Maastrichtian) of North America, reaching 6–7 m in length and 2–4 tonnes. Unlike ankylosaurids, it lacked a tail club, relying instead on massive shoulder spines for defence against tyrannosaurids. A low-browsing herbivore of ferns and low shrubs, it is known from several specimens from Canada and the United States. Its armour of keeled osteoderms formed a near-complete defensive carapace.

Diet & Feeding

Herbivore

Edmontonia 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

Edmontonia 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.