Chasmosaurus belli

† Chasmosaurus belli is the type species of Chasmosaurus, from the Dinosaur Park Formation (~75 Ma) of Alberta, Canada. Approximately 5 m long and 1.5 tonnes, it had a wide parietal frill covering nearly half its skull length and paired brow horns. Named by Lawrence Lambe in 1914, it is among the best-known ceratopsids from the Campanian Belly River Group. Multiple complete skulls allow detailed study of frill variation within the species.

Diet & Feeding

Herbivore

Chasmosaurus belli 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

Chasmosaurus belli 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.