EXTINCT ANIMALS 



is given a drawing showing how the creature 

 appeared in hfe. It had a body like the hull of 

 a submarine with four paddles attached, the 

 fore- and the hind-legs. It had a long neck 

 like that of a swan and an elongated head pro- 



FiG. 164. — Plesidsaurus as it probably appeared when alive, 

 swimming near the surface of the water with its back 

 showing and its neck and head raised above the surface. 



vided with powerful jaws armed with numerous 

 pointed teeth. It probably could swim under 

 water as well as on the surface, and when in the 

 latter position could snap small lizgirds and birds 

 from the land. The paddles have the definite 

 structure of legs, with five toes, WTist or ankle 



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