![]() At some point these ?fish? began to develop hips and legs and eventually were able to walk out of the water, giving the earth its first land lovers. # 9 Hind Leg Bones in Whales Biologists believe that for 100 million years the only vertebrates on Earth were water-dwelling creatures, with no arms or legs.The wings are not completely useless, as they are used for balance during running and in flagging down the honeys during courtship displays They are, anatomically, rudimentary wings, but they could never give these bulky birds flight. ![]() #10 The Wings on Flightless Birds In general, wings of a bird are considered complex structures that are specifically adapted for flight and those belonging to these flightless birds are no different.COMPARATIVE ANATOMY: Vestigial Structures TOP 10 VESTIGIAL SRUCTURES OF ALL TIME !.COMPARATIVE ANATOMY: Vestigial Structures Human Wisdom Teeth ARE Vestigial. ![]() ![]()
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