Edmontonia longiceps

† Edmontonia longiceps is a nodosaurid ankylosaur from the Late Cretaceous (Maastrichtian) Horseshoe Canyon and Lance Formations of the United States and Canada. Its species name longiceps ('long head') reflects its relatively elongated skull compared to E. rugosidens. Approximately 6 m long, it was a low-browsing herbivore protected by extensive body armour and large shoulder spikes. It represents the stratigraphically latest and among the largest of the Edmontonia species.

Diet & Feeding

Herbivore

Edmontonia longiceps 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 longiceps 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.