Chasmosaurus was a herbivore (plant-eater) that lived in the late
betweenabout 76 million and 70 million years ago,
Chasmosaurus was about 16 to 20 feet (5 to 6 meters) long, and weighed roughly 4 tons.
A specimen found by
Charles H. Sternberg in
even includes some
impressions - and from these it is believed that Chasmosaurus had
rows of bony knobs (osteoderms) in parts of its skin.
When Chasmosaurus was first discovered in 1898 by Lawrence Lambe, it was initially
believed to be a new species of Monoclonius.
It was only after further
fossils were found in
that it was realized that it was a separate genus.
was discovered in
it was believed to be a species of Chasmosaurus, and it was only when further
Agujiaceratopsfossils were found in
that Agujiaceratops was placed in a separate genus from Chasmosaurus.
"Chasmosaurus" means "opening lizard" (referring to the openings in its neck frill).
Chasmosaurus was a member of the Ornithischia ("bird-hipped") order of dinosaurs. What this means, is that although Chasmosaurus was not closely related to birds, it did have similarly shaped pelvic bones.
Chasmosaurus was a Ceratopsian - a member of a group of related herbivorous (plant-eating) dinosaurs with beaks, many of which had neck frills and horns as well.
Chasmosaurus lived between about 76 million years ago and 70 million years ago, during the late Cretaceous period.
Chasmosaurus lived in North America.
Chasmosaurus was a herbivore (plant-eater).
Chasmosaurus was about 16 to 20 feet (5 to 6 meters) long.
Chasmosaurus weighed about 4 tons.
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