4.6" Maiasaura Hadrosaur Dinosaur Rib Bone Fossil Two Medicine FM Montana COA Mosasaur Jaw Location: Ryan Formation

Location: Ryan Formation

Deinotherium giganteum holds a significant place in the evolutionary history of proboscideans

The celestine-bearing layer is found in a maximum 30 m thick lens between layers of crinoidal limestones and sandy greywacke from the end of the Cretaceous

apparently because it works

allowing millimeter-thick layers of limestone to build up

4.6" Maiasaura Hadrosaur Dinosaur Rib Bone Fossil Two Medicine FM Montana COA Mosasaur Jaw Location: Ryan FormationLocation: Two Medicine Formation, Montana (Private Land Origin) Weight: 4. 6 Ounces Dimensions: 4. 6 Inches Long, 1. 6 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 is a large hadrosaurid dinosaur from the Upper Cretaceous of North America, dated to approximately 6570