Large Edmontosaurus Vertebrae sat in original matrix. Vertebrate alone measures approximately 130mm x 120mm x 60mm which has a natural fracture line, but this does not affect the stability. Overall size including matrix measures approximately 215mm x 150mm x 120mm you will receive actual piece shown in pictures. The fossil is from the Hell Creek Formation Montana USA and dates from the upper Cretaceous period.
The Upper Maastrichtian fluvial Hell Creek Formation of the Fort Peck Lake area, Montana (and regional equivalents) is notable for its vertebrate fossils and for the K-Pg mass extinction at or near its upper contact.