Old Enthusiast Stumbles on 69-Million-Year-Old Dinosaur Bones, Felt “Literally Speechless” Some of the most remarkable discoveries in archaeology were the result of accidental finds by unsuspecting ...

There is one radius (R1) and one ulna (U1); these are the two bones that connect the wrist and elbow. There are two humerus bones (H1 and H2). The humerus connects the shoulder and the elbow.