Dinosaur Walk Museum Period almost 210 million years ago. It grew to be between 2–3 meters in length and less than a meter tall at the hips. Coelophysis had an unusual formation in the vertebrae, forming an "S" like shape in its neck. It is the ""official dinosaur"" of New York State. Velociraptor: Living during the late Cretaceous Period, 83-70 million years ago. The Velociraptor, a carnivore, grew to be up to in length and could grow up to 45 pounds. The Velociraptors had on their feet long curved claws used for attacking their prey. They had a bone structure similar to many
Dinosaur breast bone. Comparison of bird and dinosaur skeletons through cladistic analysis strengthens the case for the link. Large meat-eating dinosaurs had a complex system of air sacs similar to those found in modern birds, according to a 2005 investigation led by Patrick M. O'Connor. The lungs of theropod dinosaurs (carnivores that walked on two legs and had bird-like feet) likely pumped air into hollow sacs in their skeletons, as is the case in birds. "What was once formally considered unique to birds was present in some form in the ancestors of birds", O'Connor said. In 2008, scientists described "Aerosteon riocoloradensis",