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Re: DIPLODOCUS NECKS



-----Original Message---From: PTJN@aol. Date: 25 July 1998 09:28
Subject: Re: DIPLODOCUS NECKS


>In a message dated 7/24/98 3:44:05 AM Eastern Daylight Time,
GSP1954@aol.com
>writes:
>
><< The cost of overcoming the enormous dead space of the trachea occurred
with
> every breath, a few times a minute. >>
>
>This assumes that an avian-like ventilation system did not exist within the
>Sauropodomorpha, which may or may not be the case.


The avian one-way system doesn't quite include the trachea (unless Dan
Varner's hint a little after your post was right!).

JJ


"Try to think like a systematist, please."  Eek - we don't all have to
abandon logic do we?