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Re: Blood flow in Sauropods



At 4:05 PM 9/11/95, Cunningham, Betty wrote:
>     You are being species-biased towards mammals.
>     Geese, ostriches, emus, storks, herons, flamingos, and loons all have
>     long necks. Emus, flamingos, and ostriches even fit into the
>     proportion of length-of-neck-to-body-length similar to sauropods.
>     They are none of them high browsers.  Not even the vegetarian-oriented
>     geese.  They graze.

        A curious question:  many of the birds you mentioned are magnitudes
of scale smaller than the long-necked mammals -- is it possible that these
grazing, long-necked birds evolved the long necks to be able to spot
potential incoming trouble in the high grasses (etc.)?  Obviously, this
doesn't apply to sauropods, but...



Jerry D. Harris
Shuler Museum of Paleontology
Southern Methodist University
Box 750395
Dallas  TX  75275-0395
(214) 768-2750
FAX:  (214) 768-2701
jdharris@lust.isem.smu.edu
        (Compuserve:  73132,3372)

---------/O\------*     --->|:|:|>     w___/^^^\--o

"If it looks like a duck, walks like a duck, and
quacks like a duck, then it is the sister taxon to,
but cannot parsimoniously be, the direct ancestor
to all other ducks."

                                --  _not_ W. Hennig

---------/O\------*     --->|:|:|>     w___/^^^\--o