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Fw: New paper: The Braincase of Youngina capensis



Forwarded on request:

================================


Hi,

I just wanted to put this out there for those of you are who are
interested in Permian reptiles and early diapsid reptile evolution.
:-)

Gardner et al. 2010. The braincase of Youngina capensis (Reptilia,
Diapsida): New insights from High-Resolution CT Scanning of the
holotype. Palaeontologica Electronica 13(3).

 Abstract

Detailed descriptions of braincase anatomy in early diapsid reptiles
have been historically rare given the difficulty of accessing this
deep portion of the skull, because of poor preservation of the fossils
or the inability to remove the surrounding skull roof. Previous
descriptions of the braincase of Youngina capensis, a derived
stem-diapsid reptile from the Late Permian (250 MYA) of South Africa,
have relied on only partially preserved fossils. High resolution X-ray
computed tomography (HRXCT) scanning, a new advance in biomedical
sciences, has allowed us to examine the reasonably complete braincase
of the holotype specimen of Youngina capensis for the first time by
digitally peering through the sandstone matrix that filled the skull
postmortem. We present the first detailed 3D visualizations of the
braincase and the vestibular system in a Permian diapsid reptile. This
new anatomical description is of great comparative and phylogenetic
relevance to the study of the structure, function and evolution of the
reptilian head.

More on the paper here: http://tinyurl.com/2dwf5vr

Thanks,

Nick Gardner