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Re: Vancleavea campi - what is it? - not an archosauriform.



David, do you really have SUCH contempt for Nesbitt, Stocker, Small
and Downs?  Are you really SO confident that your interpretation,
which is based entirely on their work, is better than theirs?  Does
the possibility that they might just know what they're talking about
not even enter your mind?

Seriously, dude.



2009/12/5 David Peters <davidpeters@att.net>:
> One of the reasons why Vancleavea campi does not have an antorbital fenestra 
> and upper temporal fenestrae is because it is not an archosauriform. It is a 
> askeptosaurid thalattosaur and a sister taxon to the short-snouted 
> Miodentosaurus. [Links below]
>
> http://2007tga.cgu.org.tw/cdrom/Oral%20(PDF)/ST1-4B-06.pdf
> http://www.ivpp.ac.cn/cbw/gjzdwxb/xbwzxz/200902/W020090813372748918302.pdf
>
> The scales are still weird.
>
> The neomorph bone between the orbits is nothing more than the ascending 
> process of the premaxilla.
>
> For those who still think you have to stare at a specimen in person to 
> publish on it, well, now you see how that can prove to be a wee bit myopic.
>
> David Peters
>
> Refs:
>
> Cheng, Y.-N., X.-C. Wu, T. Sato. 2007. A new thalattosaurian (Reptilia: 
> Diapsida) from the Upper Triassic of Guizhou, China. Vert PalAsiatica 45: 
> 246-260.
>
> Nesbitt, S. J., M. R. Stocker, B. J. Small and A. Downs. 2009. The osteology 
> and relationships of Vancleavea campi (Reptilia: Archosauriformes). 
> Zoological Journal of the Linnaean Society 157, 814-864.
>
> Parker, W G. & Barton, B. J. 2008. New Information on the Upper Triassic 
> archosauriform Vancleavea campi based on new material from the Chinle 
> Formation of Arizona. Palaeontologia Electronica 11 (3); 14A: 20p.
>
> Wu, X.-C., Y.-N. Cheng, T. Sato and H.-Y. Shan. 2009. Miodentosaurus brevis 
> Cheng 2007 (Diapsida; Thalattosauria): Its postcranial skeleton and 
> phylogenetic relationships. Vertebrata PalAsiatica 47:1-20.
>
>