Dromaeosaurus MetatarsalDromaeosaurus was a vicious carnivorous dinosaur (Raptor) which primarily hunted the area of what was the Judith River Formation in the State of Montana, USA during the Late Cretaceous period. However, teeth and fossil material has been found in other areas, up into Canada. The first known Dromaeosaur remains were discovered by paleontologist Barnum Brown in 1914 during an expedition to Red Deer River, Alberta, Canada. That area is now Dinosaur