2.97" Theropod Limb Bone (Judith River)

Size: 2.97" long

Species: medium sized theropod

Age: late cretaceous- 75.3-79 MYA

Location Found: Judith River Formation, Blaine County, northern Montana, USA

There is no restoration or repair.

Theropod dinosaurs had lightweight, hollow or air-filled bones that helped reduce overall body weight without sacrificing strength. This feature was especially important for active, agile predators. Many theropod bones also show thin walls, internal cavities, and structural adaptations that provided strength while keeping the skeleton relatively light. These characteristics can help distinguish theropod remains from the denser, more solid bones of many other dinosaur groups.