Fossilized Femur
The remains of several Dryosaurus specimens have been found in North America and in Tanzania. A fossil femur (thigh bone) like this one can tell experts a lot about the dinosaur it came from, such as approximately how big it was, whether or not it was a fast runner, and so forth.
Dryosaurus femurA fossil femur (thigh bone) like this one can tell experts a lot about the dinosaur it came from, such as approximately how big it was, whether or not it was a fast runner, and so forth.
Handle with careIt's very important for workers to be careful when separating dinosaur fossils from rock. Tiny markings on bones can tell scientists where muscles were attached, so it's vital not to scratch or damage the fossil.