EXTINCT ANIMALS 



In Fig. 166 a drawing of an Ichthyosaurus, 

 as it must have appeared in life, is given. The 

 Ichthyosaurs are much more fish-Hke or rather 

 whale-Hke in form than the Plesiosaurs. They 

 were indeed singularly like the porpoises and 



Fiu. 166. — Drawing to show the probable appearance of an 

 Ichthyosaurus swimnimg beneath the surface of the sea. 



grampuses among living whales and stand in 

 the same relation to land-Uving reptiles that 

 the porpoises do to land-Uving mammals. Their 

 fish-Hke appearance and fins are not primitive 

 characters and do not indicate any closer blood- 

 relationship to fishes than that possessed by 



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