THE SCIENCE ABOUT ANCIENT ANIMALS

The folk tales of different nations are filled with wondrous creatures:terrible flying dragons,sea serpents,giant birds which can carry away an elephant like a kitten.Such monsters are not to be found in our forests,nor in distant lands or deep seas.Then,should we believe folk tales?Scientists say that we should.They know that creatures similar to the ones in folk tales lived on earth,only very long ago,when man did not exist yet.