2.4" Torosaurus Fossil Rib Bone Lance Creek FM Cretaceous Wyoming Dinosaur COA Albertosaurus Tooth Trilobites dominated marine ecosystems throughout

Trilobites dominated marine ecosystems throughout the Paleozoic Era and became extinct long before dinosaurs appeared

roughly 99 to 97 million years ago

which caused drastic climate changes

These chambers

2.4" Torosaurus Fossil Rib Bone Lance Creek FM Cretaceous Wyoming Dinosaur COA Albertosaurus Tooth Trilobites dominated marine ecosystems throughoutLocation: Lance Creek Formation, Wyoming (Private Land Origin) Weight: 4. 5 Ounces Dimensions: 2. 4 Inches Long, 2. 3 Inches Wide, 1. 2 Inches Thick Comes with a Certificate of Authenticity. The item pictured is the one you will receive. Name: Torosaurus Type: Herbivore Size: 7. 5 to 9 meters long. Torosaurus was a herbivorous ceratopsid dinosaur from the Late Maastrichtian stage of the Cretaceous Period, about 68 to 66 million years ago, weighing