New Horned Dinosaur: Two-Ton Plant-Eater Lived 78 Million Years Ago in Montana





Michael J. Ryan, Ph.D., a scientist at The Cleveland Museum of Natural History, has announced the discovery of a new horned dinosaur, Medusaceratops lokii. Approximately 20 feet long and weighing more than 2 tons, the newly identified plant-eating dinosaur lived nearly 78 million years ago during the Late Cretaceous period in what is now Montana. Its identification marks the discovery of a new genus of horned dinosaur.

Ryan, curator and head of Vertebrate Paleontology at the Museum, published his findings on the new genus in the book, "New Perspectives on Horned Dinosaurs: The Royal Tyrrell Museum Ceratopsian Symposium," available from Indiana University Press. Ryan was the book's lead editor.

Medusaceratops belongs to the Chasmosaurinae subfamily of the horned dinosaur family Ceratopsidae. The other subfamily is Centrosaurinae. The specimen is the first Campanian-aged chasmosaurine ceratopsid found in Montana. It is also the oldest known Chasmosaurine ceratopsid.


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