Re: [asa] AIG blurb of the week

From: Steven M Smith <smsmith@usgs.gov>
Date: Thu Dec 14 2006 - 17:29:46 EST

David Campbell writes ...
>An air-breathing animal born head first underwater has trouble breathing.
Thus, modern whales, dolphins, etc. are born tail-first, and it is
presumed that ichthyosaurs normally did so, too. <

Thanks for the correction. I have learned something new today! It also
shows that an old farm boy and geologist should know better than to
speculate on things biological <grin!>.

This is one more fascinating adaptation needed to return a land animal to
an aquatic lifestyle.

Steve
_____________
 Steven M. Smith, Geologist

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Received on Thu Dec 14 17:29:54 2006

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