1.2" Cretaceous Fossil Mammal Dentary w/ Tooth - Montana

This is a rare, 1.2" wide lower jaw section from a small, Cretaceous-aged mammal. The jaw contains a single tooth with morphology resemblant to that of Paleoungulatum hooleyi and Baioconodon sp.. That being said, it may be a completely different species all together. It comes out of the Hell Creek Formation in Dawson County, Montana.