Pachycephalosaurus: quick facts
Wart-like knobs and five-inch (13-cm) spikes fringed theten-inch (25-cm) thick dome of Pachycephalosaurus, a rare dinosaurfirst discovered in Montana. It had a narrow face with leaf-shapedteeth and in
Period
Late Cretaceous
Diet
Herbivore
Length
18 feet (5.5 meters)
Weight
4,000 pounds (1,814 kg)
Family
Pachycephalosauridae
Full Pachycephalosaurus page →
Reference background: Natural History Museum, London — Dinosaurs; Smithsonian National Museum of Natural History — Dinosaurs; American Museum of Natural History — Dinosaurs & Fossils. Figures are typical published ranges; taxonomy follows the source era and modern consensus is noted where it differs. See our sources & fact-check policy.