Besides protecting our organs, bones also work together with muscles and tendons to get the body moving. For example, the humerus, radius and ulna work with your biceps and triceps to curl or ...

In the 1950s, when they were discovered, the Ushikawa fossils were identified as parts of a human humerus (upper arm bone) and femur (leg bone), believed to be over 20,000 years old ...