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Re: Archaeopteryx skull redescribed and reconstructed



It appears my institutional access doesn't include Paläontologische
Zeitschrift - does anyone happen to have a copy of this?

Thanks!

-Scott

On Fri, Jun 7, 2013 at 10:38 AM, Ben Creisler <bcreisler@gmail.com> wrote:
> From: Ben Creisler
> bcreisler@gmail.com
>
> A new online paper:
>
> Oliver W. M. Rauhut (2013)
> New observations on the skull of Archaeopteryx.
> Paläontologische Zeitschrift (advance online publication)
> DOI: 10.1007/s12542-013-0186-0
> http://link.springer.com/article/10.1007/s12542-013-0186-0
>
> Although skeletal remains of the iconic oldest known avialian
> Archaeopteryx have been known for almost 150 years, several aspects of
> the cranial anatomy of this taxon have remained enigmatic, mainly
> because of the strongly flattened and often fractured and incomplete
> nature of available skull materials. New investigation of the skulls
> of the recently described, excellently preserved tenth (Thermopolis)
> and the seventh (Munich) specimens revealed several previously
> unrecognized characters and helps to resolve some problematic issues.
> Thus, the nasal of Archaeopteryx shows a lateral notch for the
> lacrimal, as is found in many other saurischian dinosaurs, the maxilla
> clearly participates in the margin of the external nares, and there
> seems to be a pneumatic foramen in the lacrimal, comparable to the
> lacrimal fenestra found in many non-avian theropods. In the braincase,
> Archaeopteryx shows pneumatic features reminiscent of non-avian
> theropods, including a ventral basisphenoid recess and an anterior
> tympanic recess that is laterally incised into the
> basisphenoid/prootic. Most importantly, however, the postorbital
> process of the jugal shows a facet for the suture with the
> postorbital, thus resolving the question of whether Archaeopteryx had
> a closed postorbital bar. A new reconstruction of the skull of
> Archaeopteryx is presented, making the skull of this taxon even more
> theropod-like than previously recognized. Furthermore, the closed
> postorbital bar and the configuration of the bones of the skull roof
> cast serious doubt on claims that an avian-style cranial kinesis was
> present in this taxon.



-- 
Scott Hartman
(608) 620-4030
website: www.skeletaldrawing.com
blog: http://skeletaldrawing.blogspot.com/