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Re: Diagnosis of Polyptychodon



Thanks for all the response,

cheers,
Michael

-------- Original-Nachricht --------
> Datum: Wed, 28 Apr 2010 17:57:30 +0200
> Von: Jocelyn Falconnet <j.falconnet@gmail.com>
> An: Michael.Lange@gmx.ch
> CC: VRTPALEO@usc.edu, dinosaur@usc.edu
> Betreff: Re: Diagnosis of Polyptychodon

> In a recent description of a gigantic pliosaur from the Late Cretaceous 
> Western Interior Sea, Bruce Schumacher reviewed the status of the 
> *Polyptychodon*. It was considered as dubious by Welles (1962) in his 
> review of Cretaceous plesiosaurs, and Schumacher (2008) agreed with this 
> statement because *Polyptychodon continuus* (type species of the genus) 
> was erected on an isolated and undiagnostic pliosaurid tooth by Owen 
> (1861). The status and taxonomic position of other European 
> *Polyptychodon* need to be reevaluated.
> 
> I can send you the pdf, if you need it.
> 
> Reference (and references herein):
> 
> Schumacher B.A. 2008. On the skull of a pliosaur (Plesiosauria; 
> Pliosauridae) from the Upper Cretaceous (Early Turonian) of the North 
> American Western Interior. Transactions of the Kansas Academy of Science 
> 111(3 & 4):203-218.
> 
> Cheers,
> Jocelyn Falconnet
> 
> Michael Lange a écrit :
> > Dear list,
> >
> > I'am looking for a diagnosis of the pliosaurid plesiosaur Polyptychodon.
> Does anyone know if there is a recent paper or phD thesis where a
> diagnosis of the genus is included?
> >
> > Cheers,
> >
> > Michael
> >   

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