Kritosaurus (Hadrosaur) Tooth - Two Medicine Formation

This is a tooth from the Hadrosaur (duck-billed dinosaur), Kritosaurus breviceps. Nearly all Hadrosaur material commonly seen on the market is from Edmontosaurus that comes from the younger Hell Creek Formation. This tooth was collected from the Two Medicine Formation (Judith River Group) in Central Montana and is approximately 70 million years old.

Hadrosaurs

are frequently referred to as duck-billed dinosaurs and are members of the Ornithischian family Hadrosauridae. They were fairly common herbivores that roamed Asia, Europe, and North America during the Upper Cretaceous Period. Many species of Hadrosaurs had distinctive crests on their heads, some of which had air-filled chambers that may have produced a distinct sound. These crests may have been used for both audio and visual display purposes.

More about Hadrosaurs