ZEUGLODONTS 311 



the seals. It is likely that whales have been derived 

 from animals with this more typical mammalian 

 arrangement. There is certainly one family only, and 

 probably but a single genus of this group of whales. 

 The remains of this have been found in many parts of 

 the world, .indicating that its distribution was like that 

 of most Cetacea of the present day, wide. This genus 

 was one of the great whales, and reached a length of 

 certainly seventy feet. The best known species is 

 Zeuglodon cetoides. But in spite of the abundance of 

 its remains no complete skeleton has ever been got 

 too-ether. 



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