3.8" Maiasaura Hadrosaur Dinosaur Rib Bone Fossil Two Medicine FM Montana COA Amethyst A flexible jaw structure allowed

A flexible jaw structure allowed for a wide gape

These fossil clams are easily recognized by their unique shell shape and the presence of three to four cardinal teeth on each valve

making them the first vertebrates to achieve powered flight

and specialized feeding strategies to dominate ancient oceans

it sported a striking flat

3.8" Maiasaura Hadrosaur Dinosaur Rib Bone Fossil Two Medicine FM Montana COA Amethyst A flexible jaw structure allowedLocation: Two Medicine Formation, Montana (Private Land Origin) Weight: 3. 7 Ounces Dimensions: 3. 8 Inches Long, 1. 5 Inches Wide, 0. 8 Inches Thick Comes with a Certificate of Authenticity The item pictured is the one you will receive. Cretaceous Age 83 70 Million Years Old. Name: Maiasaura Type: Herbivore Size: 9 meters in length. Maiasaura was a large herbivorous duck billed dinosaur from the Upper Cretaceous Period, around 65 to 70 million years