XL 2.2" Mosasaur Prognathodon Fossil Tooth Cretaceous Dinosaur Era COA, Stand Tail Although ammonites survived multiple mass

Although ammonites survived multiple mass extinctions—including the catastrophic Permian-Triassic event—they ultimately perished around 66 million years ago during the Cretaceous-Paleogene extinction

and the evolutionary adaptations of ceratosaurian theropods

attaching to sedimentary rock substrates that provided stable surfaces for growth and survival

The movement of frozen lake ice during the winter is thought to reveal new stones each spring

Their first appearance in the fossil record dates back to approximately 521 million years ago

XL 2.2" Mosasaur Prognathodon Fossil Tooth Cretaceous Dinosaur Era COA, Stand Tail Although ammonites survived multiple massLocation: Oued Zem, Morocco Weight: 1. 7 Ounces Dimensions: 2. 2 Inches Long, 1. 4 Inches Wide, 1. 1 Inches Thick Comes with a Certificate of Authenticity. Comes with a Free Stand and Mineral Tack. The item pictured is the one you will receive. 100 66 Million Years old, Upper Cretaceous, Maastrichtian Epoch. Name: Prognathodon Type: Carnivore Size: 6 to 14 meters in length Prognathodon is an extinct genus of marine lizards within the mosasaur family,