Ankylosaurus Coracoid Section Dinosaur Bone - collected from Hell Creek Formation, MT, Cretaceous 68 MYO. This is a nice, hefty section of a coracoid (shoulder area) of a ankylosaurus. This specimen has no restoration and is essentially as it was taken out of the ground. Ankylosaur fossils are rare and to find a specimen intact such as this is practically unheard of.