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News: USA showered by a watery comet ~11,000 years ago, ending the Golden Age of man in America
http://dsc.discovery.com/news/briefs/20050926/mammoth_02.html
 
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Plesiosaur

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Author Topic: Plesiosaur  (Read 3877 times)
Melody Stacker
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« on: October 09, 2007, 11:17:51 am »

Behaviour

Unlike their Pliosaurian cousins, Plesiosaurs (with the exception of the Polycotylidae) were probably relatively slow swimmers. It is likely that they cruised slowly below the surface of the water, using their long flexible neck to move their head into position to snap up unwary fish or cephalopods. Their unique, four-flippered swimming adaptation may have given them exceptional maneuverability, so that they could swiftly rotate their bodies as an aid to catching their prey.

Contrary to many reconstructions of plesiosaurs, it would have been impossible for them to lift their head and long neck above the surface, in the 'swan-like' pose that is often shown. Even if they had been able to bend their necks upward, to that degree (they could not), gravity would have tipped their body forward and kept most of the heavy neck in the water.

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