Answer:
Dire wolves- these wolves had long ulna and radius bones to support the wolve's need to run for extended periods of time to hunt animals. The distal bones allowed the wolves to keep the wolf balanced and helped ensure the body could handle running on land
the fruit bat- the small yet long and thin ulna, radius, and distal bones of the fruit bat ensure the bat is light enough to fly quickly and avoid weighing down the bats wings. the light bones allow the bat to fly quickly as the bats do not require strong bones to run like the dire wolf
