11.4" Hadrosaur (Edmontosaurus) Maxilla With Teeth - Montana

Hadrosaur (Edmontosaurus) Maxilla With Teeth - Montana #176349

This is a 11.4" long maxilla of Edmontosaurus annectens with many of the teeth still in place. The preservation of the bone is quite nice, with very little restoration required to piece this beauty back together. It did require some spots of crack repair where the bone fractured and separated within the rock. Restoration is in the form of gap fill and was only required in spots where fragments of bone were lost where it fractured.

Many of the small details of the bone still remain, including natural grooves on the inside of the maxilla, as well as some of the foramina. Also... Look at all those teeth! This maxilla still contains a full battery of teeth with worn feeding surfaces from grinding down foliage.

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.

The Hell Creek Formation

Renowned for both its age and rich sedimentary layers, the Hell Creek Formation is one of the most intensively studied fossil-bearing regions on Earth. To date, scientists have documented 158 genera of animals and 64 genera of plants from its rocks, with new finds emerging regularly. Beyond iconic dinosaurs such as tyrannosaurs, ceratopsians, and hadrosaurs, the formation has produced an extraordinary array of life, including amphibians, reptiles, lizards, snakes, turtles, fish, sharks, birds, and early mammals. Together, these fossils provide the most complete picture of the ecosystems that thrived just before the Cretaceous–Paleogene extinction event.

More about Hadrosaurs