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Triceratops (extinct)
Scientific classification
Kingdom Information
Kingdom Animalia
Phylum Information
Phylum Chordata
Class Information
Class Sauropsida
Sub-class Diapsida
Infra-class Archosauromorpha
Order Information
Superorder Dinosauria
Order Ornithischia
Sub-order Cerapoda
Infraorder Ceratopsia
Family Information
Family Ceratopsidae
Sub-family Ceratopsinae
Genus Information
Genus Triceratops
Species Information
Species T. horridus; T. prorsus
Population statistics

Triceratops ("three-horned face") was a large North American ceratopsian (horned) dinosaur. It had a large bony frill protecting its neck and three horns - one over each eye and a smaller one on its beaked snout.

Triceratops was herbivorous, up to 26 feet long, and could weigh up to 6 tons. The skull of Triceratops, which is approximately a third of the entire animal's length, is among the largest known for all land animals.

Paleontologists once believed there were several species of Triceratops, judging from the large number of fossil remains, but it is now thought that there were just two, T. horridus and the larger T. prorsus. In the evolutionary paradigm, they would have been among the last of the dinosaurs, living in the late Cretaceous period. Fossils of Triceratops have so far been found only in North America.[1]

Triceratops is the official state dinosaur of Wyoming.[2]


  1. The Complete Book of Dinosaurs, by Dougal Dixon, Anness Publishing, 2006