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Re: Plesiosaurs Necks
On Fri, 20 Jan 2006 00:29:37 +1100, Colin McHenry wrote
> > (like underwater versions of diplodocids
> Unless diplodocids were catching fish and cephalopods, I doubt that....
How can we be sure they were catching them, and not just scavenging dead
animals from the sea floor... :)
Less flippantly; many species die en masse after spawning, and I'm sure a
passing plesiosaur wouldn't have hesitated to snatch up as much free food as
It's been proposed that the long necks of diplodocids were to enable them to
feed in a more energy efficient manner, sweeping them back and forward
without the need for a lot of constant forward movement. Perhaps this was
also true of elasmosaurs? Imagine one resting on the sea floor, and a schoal
of fish/cephalopods swim by. Just raising the head quickly and sweeping it
randomly back and forth through the schoal with a gaping mouth could be
enough to snare dinner (especially if they had the jaw-closing reflexes of a
croc or skimming bird when the tip of the lower jaw is touched).
(Sea)food for thought...
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