- RARE!! Cretaceous Mammal Bone
- Cretaceous Age
- Hell Creek Formation
- Harding County, South Dakota
- Specimen measures approx. 11/16″ long and will come in the 3.25″ x 4.25″ Riker Mount with Label as Shown
These bones are from the TINY MAMMALS that were scurrying around during the Cretaceous Period trying to avoid being eaten by small meat-eating dinosaurs and other predators.