From the Smithsonian 3D Digitization library, I have converted the mesh to STL in Blender.

Allosaurus fragilis Marsh, 1877: Claw

Geologic Age
Mesozoic / Jurassic / Late

Record Last Modified
4 Aug 2025

Skeletal Morphology
Appendicular element, claw

Stratigraphy
/ Morrison Fm

Collection Date
1883

Collector
Marshall P. Felch

Place
Fremont County, Colorado, United States, North America