Re: Opisthopuby in Coelurosaurs

["Berislav Krzic" <veselinka.stanisavac@siol.net>]

-----Original Message-----
From: Jaime A. Headden <qilongia@yahoo.com>
To: dinosaur@usc.edu <dinosaur@usc.edu>
Cc: tsg94001@uconnvm.uconn.edu <tsg94001@uconnvm.uconn.edu>
Date: 25. februar 1999 8:05
Subject: Opisthopuby in Coelurosaurs


>tsg94001@uconnvm.uconn.edu wrote:
>
><Does anybody know why certain theropods (dromaeosaurids, birds,
>therizinosauroids) have the pubis pushed back?  I have heard that
>ornithischians have an opisthopubic pelvis because it makes space for a
>bigger gut (always helpful when digesting cellulose-rich, nutrition-poor
>plant matter). This could apply to therizinosauroids too, but why did
>dromaeosaurids and birds do it?>
>


I guess the main purpose was to make room for bigger eggs. Bigger eggs -
bigger chicks. Bigger chicks leave their nests earlier and can take care for
themselves sooner.


Berislav Krzic (Kr?ic)
illustrissimus@usa.net
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