A complete tooth with root could be over 12 inches long
slate was quarried for hundreds of years and is still quarried today up to 38 feet in depth
Unlike many other oviraptorids
There are vertical and horizontal hangers on the back
The Camarasaurus sauropod dinosaur known as Lyle is the largest discovered to date
Parasaurolophus walkeri, left lower jaw (juvenile) hadrosaur Pteranodon A complete tooth with rootParasaurolophus was a long crested, duck billed (hadrosaur) dinosaur. Its extremely long, backwards leaning, hollow, bony crest was as bigger than the rest of its skull and may have been used to produce a low frequency, foghorn like sound, enhance its sense of smell, and or used in courtship displays. The Parasaurolophus' nostrils (at the end of its snout) went up through the crest and back down it, forming four tubes. The crest was up to 6 feet (1. 8