EXTINCT ANIMALS 



In Fig. 166 a draAving of an Ichthyosaurus, 

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

 Ichthyosaurs are much more fish-hke or rather 

 whale-hke in form than the Plesiosaurs. They 

 were indeed singularly Uke the porpoises and 



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

 Ichthyosaurus swimming beneath the surface of the sea. 



grampuses among living whales and stand in 

 the same relation to land-living reptiles that 

 the porpoises do to land-living 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 



226 



