Chasmosaurus was a Creataceous Period Ceratopsid Dinosaur Chasmosaurus, pronounced “KAZ-mo-SAWR-us”, is a North American dinosaur that lived during the upper Cretaceous period, about 70-75 million years ago. Its name is from the Greek words meaning “cleft” or “opening” and “lizard”. The name refers to the fenestration in the frill around its neck. It was part of the Ceratopsid … [Read more...]
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