Re: Triceratops sprawl

[Jeffrey Martz <martz@holly.ColoState.EDU>]

> >     No published references perhaps, but the fact is that the angle 
> >of the anterior ribs and alignment of the scapula on the sprawler were 
> >unnatural.  The correct orientation of the humerus relative to the scapula 
> >is 
> >not what is in doubt.  If the scapula is in the wrong place, the humerus 
> >will be as well even if its articulated correctly.        
> 
> Even if the ribs were misarticulated, this wouldn't necessarily prove that 
the animal had an upright posture.  

     If the ribs are oriented correctly, the scapula is oriented 
correctly relative to the ribs, and the humerus is oriented correctly 
relative to the scapula, it certainly would.  The non-sprwaling model is 
consistent with the fossil material, our understanding of how vertebrate 
and dinosaur skeletons articulate, and the trackway evidence. 

LN Jeff