This is a large, solid 13.5" long metatarsal (toe) bone of a Hadrosaur (Hypacrosaurus). It was collected this past summer from the Two Medicine Formation of Pondera County, Montana. There is just some repair, crack fill restoration and restoration of erosion on one end. It comes with a custom metal display stand.
Hypacrosaurus is a very large, Lambeosaurini Hadrsosaur that would have been almost as large as the Tyrannosaurs that it lived alongside. Like Corythosaurus, it had a tall, hollow rounded crest, although not as large and straight. It is known from the remains of two species that spanned 75 to 67 million years ago, in the Late Cretaceous of Alberta, Canada, and Montana, United States, and is the latest hollow-crested duckbill known from good remains in North America. It is estimated to have been around 9.1 meters (30 feet) long and to have weighed up to 4-5 tons.
Hypacrosaurus drawing by wikipedia user debivort. Creative Commons License