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RE: Sheesh



Well, of course, there are certainly secondarily aquatic birds (and have been since the Cretaceous)!

At 10:19 AM 24/10/2006, Mike Taylor wrote:
More suprising still, to me, is the absence of secondarily aquatic
dinosaurs.  So far as we can tell, they didn't make it back to the sea
once in 150 million years, whereas we mammals have done it repeatedly
in the last 65 million.  Why would that be?

Ronald Orenstein
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