This Specimen has been sold.
2.78" Edmontosaurus Sacral Vertebrae - Montana
This is a partial 2.78" wide vertebrae of Edmontosaurus annectens a type of Hadrosaur. It appears to be either a sacral vertebrae or one from the base of the tail (post-sacral caudal) It was found in the Hell Creek Formation in Carter County, Montana. The bone has quite a bit of weathering which complicates the identification of position. It has beautiful areas of the shiny, smooth outer bone remaining. The dorsal portion has eroded away and all that remains is the vertebra body.
Hadrosaursare frequently referred to as duck-billed dinosaurs and are members of the ornithischian family Hadrosauridae They were fairly common herbivores which roamed Asia, Europe and North America during the Upper Cretaceous Period. Many species of hardrosaurs had distinct crests on their head, some of which had air filed chambers that may have produced a distinct sound. These crests may have been used for both audio and visual display purposes.