3.1" Corythosaurus Fossil Rib Bone Judith River FM Cretaceous Dinosaur Montana COA Print This mineralized shell is the

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3.1" Corythosaurus Fossil Rib Bone Judith River FM Cretaceous Dinosaur Montana COA Print This mineralized shell is theLocation: Judith River Formation, Central Montana (Private Land Origin) Weight: 1. 8 Ounces Dimensions: 3. 1 Inches Long, 1 Inch Wide, 0. 7 Inches Thick Comes with a Certificate of Authenticity. The item pictured is the one you will receive. Late Cretaceous, 83 million years old. Name: Corythosaurus Type: Herbivore Size: 9 meters in length. Corythosaurus is a genus of hadrosaurid, or duck billed, dinosaurs that lived during the Upper Cretaceous