Width 120 mm

This genus was named after Samuel Wendell Williston

Sharp claws and jaws full of pointed teeth become lethal weapons in this deadly fight

Instead of relying on slow movements

cranial and dental anatomy

Utahraptor ostrommaysi Kosmoceratops Width 120 mmUtahraptor ostrommaysi was one of the largest known dromaeosaurids and one of the most representative predators of the Early Cretaceous of North America. Its remains come from the Cedar Mountain Formation in eastern Utah, especially from the Yellow Cat Member, in deposits associated with continental environments of floodplains, river channels, and semi arid ecosystems with seasonal wetlands. Formally described by Kirkland, Gaston, and Burge in 1993,