Theropod Bone Fossil In Matrix Personal Find Morrison Fm. Big Horn Co, WY
Locality: Big Horn County, Wyoming. Age: Jurassic, 156-146 million years old. A Fossil Bone from an unidentified Theropod Dinosaur in its original matrix from the Morrison Formation in Big Horn County, Wyoming. Left in Matrix for display purposes. This fossil is a personal find from our own dig trips.