Re: Postosuchus posture

[Phil Bigelow <bigelowp@juno.com>]

Has anyone made a fleshed-out 3D model of Postosuchus in order to
estimate its center of mass?  How does the position of its center of mass
compare to known obligate bipeds and known obligate quadrupeds?  That may
help to answer the question.

<pb>
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On Sat, 19 Nov 2005 21:21:49 +0000 Michael Mortimer
<mickey_mortimer111@msn.com> writes:
> According to Weinbaum (2002), it "was at least facultatively bipedal, 
> and 
> possibly an obligate biped."  I saw his talk, and indeed, the manus 
> is tiny. 
>   Note the original reconstructions based on Chatterjee's work are 
> chimaerical (including Shuvosaurus elements, I believe).
> 
> Mickey Mortimer
> 
> >From: amcdona9@bigred.unl.edu
> >Reply-To: amcdona9@bigred.unl.edu
> >To: Dinosaur Mailing List <dinosaur@usc.edu>
> >Subject: Postosuchus posture
> >Date: Sat, 19 Nov 2005 14:57:19 -0600 (CST)
> >
> >I am attempting a restoration of Teratosaurus, a close relative of
> >Postosuchus. I have located Gregory Paul's reconstruction of the 
> latter
> >in 'The Complete Dinosaur' that displays a bipedal stance. Is this 
> in line
> >with current thinking, or is a quadrapedal gait, a la 'Walking 
> with
> >Dinosaurs', closer to the mark? Postosuchus's head looks too 
> massive and 
> >its
> >hindlimbs too short to be an obligate biped. Could it have utilized 
> some
> >combination, i.e. walking about on four legs but becoming bipedal 
> for 
> >bursts
> >of speed, as in dispatching prey?
> >-Andrew McDonald
> >
> 
> 
> 
> 


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