Which one of the following is not a living fossil?

Correct Option (c) Reason : Archaeopteryx lithographica is not a living fossil It is a fossil bird that lived in Jurassis period about 180 million years ago. Its fossil displays the characters of both reptiles (e.g. long tail, bones non pneumatic, claw, presence of weak stemum, free caudal vertebra, etc) and birds (e.g. presence of feathers, modified jaws, etc).