19.5" Mosasaur Prognathodon Fossil Jaw Section Teeth Cretaceous Dinosaur Era COA Green River Plant The fossils here primarily date

The fossils here primarily date from the Silurian Period (roughly 420–430 million years ago)

a tail section where the segments were fused into a single protective plate

and hydrothermal activity that promote copper oxidation

Their widespread presence provides paleobotanists with essential insight into the structure

This rigid shell increased their likelihood of fossilization and is the primary reason trilobites are so commonly found in the fossil record

19.5" Mosasaur Prognathodon Fossil Jaw Section Teeth Cretaceous Dinosaur Era COA Green River Plant The fossils here primarily dateLocation: Oued Zem, Morocco Weight: 21 Pounds 3. 3 Ounces Dimensions: 22 Inches Long, 10 Inches Wide, 2. 4 Inches Thick (Matrix) Jaw Dimensions: 19. 5 Inches Long, 9 Inches Wide, 2 Inches Thick Comes with a Certificate of Authenticity. The item pictured is the one you will receive. 100 66 Million Years old, Upper Cretaceous, Maastrichtian Epoch. Some of the teeth have been placed back onto the jaw, and a small amount of composite material has been