12.7" Unprepared Hadrosaur (Edmontosaur) Femur Section

This is a 12.7" long Hadrosaur (Edmontosaur) Femur section from the Hell Creek Formation in Harding County, South Dakota. This femur section is in very raw condition. When it was removed from the ground it was wrapped in foil and has been there since that day. It has dried and has become somewhat unstable. This is a project for someone who enjoys or wants to try specimen preparation.

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.

Because of its age and sedimentary composition, the Hell Creek Formation has become one of the most paleontologically studied areas in the world. 158 genera of animals and 64 genera of plants are known from the formation and new discoveries are made frequently. In addition to Tyrannosaurs, Ceratopsids, and Hadrosaurs, the formation has yielded remains of amphibians, reptiles, lizards, snakes and turtles, fish and sharks, avian and non-avian dinosaurs, and mammals. The Hell Creek Formation gives the most complete understanding of the environment just before the Cretaceous-Paleogene extinction.
Edmontosaurus annectens
Harding County, South Dakota
Hell Creek Formation
12.7 x 6.9 x 5.8" in foil jacket
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