The specific name honoured collector Walter Bell. He erected the new species Monoclonius belli to describe his findings. Although recognizing that his find represented a new species, Lambe thought this could be placed in a previously-known short-frilled ceratopsian genus: Monoclonius. In 1898, at Berry Creek, Alberta, Lawrence Morris Lambe of the Geological Survey of Canada made the first discovery of Chasmosaurus remains holotype NMC 491, a parietal bone that was part of a neck frill. belli comes from the middle and upper beds. russelli come from the lower beds of the formation, while C. All of the excavated specimens of Chasmosaurus were collected at the Dinosaur Park Formation, Dinosaur Provincial Park, Alberta, Canada. It was initially to be called Protorosaurus, but this name had been previously published for another animal.
The Chasmosaurs were similar, in overall build and weight, to a white rhinoceros or an Indian rhinoceros just like rhinos, and all other ceratopsians, they were purely herbivorous, needing to consume around 54 kilograms, or 120 lbs., of plant matter each day.
With a length of 4.3–4.8 metres (14.1–15.7 ft) and a weight of 1.5–2 tonnes (1.7–2.2 short tons)-or anywhere from 2,200 to nearly 5,000 lbs., give or take- Chasmosaurus was of a slightly smaller to ‘average’ size, especially when compared to other ceratopsians (such as Triceratops, which were nearly the size of an African bush elephant). Its given name means 'opening lizard', referring to the large openings ( fenestrae) in its frill ( Greek chasma, meaning 'opening', 'hollow', or 'gulf' and sauros, meaning 'lizard'). belli (Lambe, 1902) Ĭhasmosaurus ( / ˌ k æ z m oʊ ˈ s ɔːr ə s/ KAZ-moh- SOR-əs) is a genus of ceratopsid dinosaur from the Late Cretaceous Period in North America. belli skeleton, Royal Ontario Museum specimen 843
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