0.98" (2.5 cm) Hadrosaur tooth from the Two Medicine Formation of Pondera County Montana. This is likely from a Hypacrosaurus (a type of crested hadrosaur) because most of the bones found at this site have been from Hypacrosaurus. 75 million years old.

I left some matrix on the tooth near the tip because removing the matrix would have likely damaged the denticles.