Re: New Carcharodontosaurine Maxilla

["Waylon Rowley" <hot__male60@hotmail.com>]

To Steven Coombs, who wrote:

> Oh ya the maxilla is long like Charcharodontosaurs saharicus, I find it 
> >looks like that.

It looks like the "maxillary fenestra" I described is actually the 
promaxillary fenestra....not entirely sure, but it seems to be in that 
position. Oddly, the new Carnotaurine to be described by Coria, Chiappe & 
Dingus has been described as having a "maxillary fenestra". As far as I 
know, only the promaxillary is known for Abelisauridae, so this is either a 
case of mistaken identification or in convergence with the standard 
neotetanuran character (presumably reversed in G. carolinii, C. saharicus, 
and Monolophosaurus jiangi). One thing I would like to get cleared up, is 
whether we have phalangeal material for the Carcharodontosaurinae. Does the 
holotype for C. saharicus (juvenile, I believe) have pelvic girdle material? 
HP T. Mike Keesey has stated on the Dinosauricon (when addressing the 
Carch-Abelisaur link) that "....characteristics, such as the three-fingered 
hand (neoceratosaurs have four fingers), cast doubt on this idea." Can it be 
verified that Carchs don't have a vestigal fourth metacarpal? Thanks in 
advance!
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