Triceratops Lower Jaw Beak Ankylosaurus The thick skull domes of

The thick skull domes of Pachycephalosaurus and related genera gave rise to the hypothesis that pachycephalosaurs used their skulls in intra-species combat

Class: Sauropsida

Iguanodon only had one replacement tooth at a time for each position

Late Carboniferous to late Permian (270 m

The teeth of the Giant Beaver are bigger and broader

Triceratops Lower Jaw Beak Ankylosaurus The thick skull domes ofThis is the lower jaw beak of Triceratops. The original was found in the Hell Creek Formation of late Cretaceous Age or about 66 million years ago. Individual Triceratops are estimated to have reached about 7. 9 to 9. 0 meters (26. 029. 5 feet) in length, 2. 9 to 3. 0 meters (9. 59. 8 feet) in height, and 6. 112 tons (13,00026,000 pounds) in weight. The most distinctive feature is their large skull, among the largest of all land animals. The largest