Frogs, birds, rabbits, and lizards all have different forelimbs, which makes sense when you consider their different lifestyles. interestingly, all of their forelimbs share the same set of bones the ulna, the radius, and the humerus. these same bones are also seen in fossils of the extinct animal eusthenopteron, which demonstrates common ancestry among these four groups of animals. hence, these forelimbs are an example of: similes. homologies. analogies. homilies.