This common hand bone is proof that each of these mammalian species evolved from the same ancestor and further displays the evolution of organisms throughout history.
The conclusion that two animal species evolved from a common ancestor in recent geological history is best supported by the observation that the species have similar bone structure.
The conclusion<>evolved<>from a common ancestor$$$The conclusion that two animal species evolved from a common ancestor in recent geological history<>is best supported<>by the observation that the species have similar bone structure$$$the species<>have<>similar bone structure