On June 13, a fastball rode inside and struck him in his right forearm, fracturing his ulna.

Haniger left the game, and tests revealed a fractured ulna that required surgery.

Jefferson, who had a deep passion for natural history, had received several bones, including the ulna, radius and claws, of an unknown animal.

The UCL connects the humerus bone to ulna bone at the elbow.

The creature’s two front fins had bones corresponding to our humerus, radius, ulna and wrist bones.