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Temporal range: Upper Cretaceous 76.5–67 mya
Euoplocephalus BW.jpg
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Sauropsida
Superorder: Dinosauria
Order: Ornithischia
Suborder: Thyreophora
Infraorder: Ankylosauria
Family: Ankylosauridae
Genus: Euoplocephalus
Lambe, 1910
Skeleton of Euoplocephalus with some of its armour

Euplocephalus (meaning "well-armored head") was a large armored dinosaur, measuring about 20 feet (6 m) long; it weighed about 2 tons. Its wide head had a horny, toothless beak, small, peg-like cheek teeth, bony horns, and a small brain. Among its contemporaries were the large meat-eating Tyrannosaurus and Deinonychus.

Fossils from more than 40 individuals have been discovered in Alberta, Canada and Montana in the United States, making Euoplocephalus the best known ankylosaurid. This includes 15 skulls, teeth, and a few almost-complete skeletons, found with the armor still attached.[1] Individual armor plates are the most commonly found element from them.

References[change | change source]

  1. Vickaryous M.K. et al. 2004. "Ankylosauria" In D.B. Weishampel, P. Dodson, and H. Osmolska (eds) The Dinosauria. 2nd ed, University of California Press, Berkeley. 363-392