First of the raptors, Deinonychus was discovered by renowned palaeontologist Dr. John Ostrum. Name means "terrible claw." Deinonychus was larger than the more popularly known Velociraptor but otherwise was similar in form and probably hunted in a similar manner. A super cast!
Specs: Deinonychus sp.
Cretaceous (115 m.y.a.). Wyoming & Montana, USA.