5.25" Hadrosaur Metacarpal (Hand Bone) - Montana

This is a metacarpal from a Hadrosaurid found in the Two Medicine Formation (Judith River Group) of Eastern Montana. The bone is 5.25" long and nicely preserved with very little weathering and still has a smooth outer surface. There are cracks running across the bone that occurred naturally during the fossilization and erosion process. Some were repaired and the others have been stabilized. There is no restoration.

Within the Judith River Group there are 3 major hadrosaurids, Brachylophosaurus, Kritosaurus, and Lambeosaurus with Brachylophosaurus being the most commonly found. With just a single bone it is hard to differentiate between the different genera and give a definitive identification.