Re: Sail vs Hump?

[Adam Yates <zooamy@zoo.latrobe.edu.au>]

On Fri, 3 May 1996, Rob Meyerson wrote:

>  adding the hump, he found that the pelvic region was located too far back
>  to justify the idea of a bipedal animal (unless it was standing on a hill,
>  with it's tail tilted downward:-).  He concluded that _Oranosaurus_ was
>  fully quadrepedal.  Another interesting notion is that the pelvis of
>  _Spinosaurus_ is located in a similar position to _Oranosaurus_.  If this
>  is true, then _Spinosaurus_ would be the only quadrepedal theropod known.


How do we tell how long the presacral column of Spinosaurus was? At the 
moment there are only illustrations of a few dorsal vetrebrae and no 
pelvis (correct me if I am wrong, I'm writing off the top of my head). 
Unless of course you have seen this new Spinosaurus material I've heard a 
little bit about. If so where did you see it? I'm dying to know more 
about this theropod. I wouln't go calling it quadrapedal until the 
forelimb was well known, you never know maybe a long heavy tail, 
counterbalaced the extra weight of the sail/hump structure.

"A frog? In whose bidet?"
Adam Yates