6.1" Maiasaura Hadrosaur Dinosaur Vertebrae Bone Fossil Two Medicine FM MT COA Fish The shape of these tracks

The shape of these tracks is determined by the movement of the trilobite's biramous appendages

famous for Tyrannosaurus rex

each featuring a central columella and radiating septae

around 145–200 million years ago

6.1" Maiasaura Hadrosaur Dinosaur Vertebrae Bone Fossil Two Medicine FM MT COA Fish The shape of these tracksLocation: Two Medicine Formation, Glacier County, Montana (Private Land Origin) Weight: 2 Pounds 12 Ounces Dimensions: 6. 1 Inches Long, 4. 2 Inches Wide, 3 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 genus of large, herbivorous saurolophine hadrosaurid (duck billed) dinosaurs that