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Einiosaurus Fact Sheet

Dinosaur/Paleontology Dictionary
NAME: Meaning - Einiosaurus means "buffalo lizard" (einio comes from the Blackfoot Indian word for buffalo)
Pronounced - eye-nee-o-SAWR-us
Named By - Scott Sampson
When Named - 1995
DIET: Herbivore (plant-eater)
SIZE: Length - roughly 20 feet (6 m) long
Height - about 6.6 ft (2 m) tall at the hips
Weight - about 2 tons
WHEN IT LIVED: Late Cretaceous period, about 84-71 million years ago
WHERE IT LIVED: Fossils have been found at the Two Medicine Formation, Montana, United States, North America.
FOSSILS: 3 Einiosaurus skulls have been found.
  • Kingdom Animalia (animals)
  • Phylum Chordata (having a hollow nerve chord ending in a brain)
  • Class Archosauria (diapsids with socket-set teeth, etc.)
  • Order Ornithischia - bird-hipped dinosaurs (plant-eaters)
  • Suborder Marginocephalia - (meaning "fringed heads")
  • Infraorder Ceratopsia (also called Ceratopia)
  • Family Centrosaurinae (rhino-like ceratopsians)
  • Genus Einiosaurus
  • Species E. procurvicornis (type species named by Sampson, 1995)
Einiosaurus had a long, forward-curving snout horn, two large bony-horns on its neck frill (and many smaller ones), and bony ridges over the eyes. Einiosaurus was probably a herding animal, like the other ceratopsians. T. rex probably ate dinosaurs like Einiosaurus.

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