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RE: Majungasaurus had weird little arms (free pdf)



Free?  On my screen it's asking for the low low price of $43.  Why if all of my 
non-bird theropod pdfs cost that much, it would cost a mere $76000... :|

Mickey Mortimer

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> Date: Thu, 12 Jan 2012 11:14:23 -0800
> From: bcreisler@gmail.com
> To: dinosaur@usc.edu
> Subject: Majungasaurus had weird little arms (free pdf)
>
> From: Ben Creisler
> bcreisler@gmail.com
>
> In the new issue of the Journal of Vertebrate Paleontology a study of
> the forelimbs in Majungasaurus. The pdf is free!
>
> S. H. Burch and M. T. Carrano (2012).
> An articulated pectoral girdle and forelimb of the abelisaurid
> theropod Majungasaurus crenatissimus from the Late Cretaceous of
> Madagascar.
> Journal of Vertebrate Paleontology 32(1): 1-16.
> DOI:10.1080/02724634.2012.622027
> http://www.tandfonline.com/doi/abs/10.1080/02724634.2012.622027
>
>
> Abelisaurid theropods are common members of Cretaceous Gondwanan
> faunas and are characterized by a bizarre, highly reduced forelimb.
> Unfortunately, forelimb elements are rarely preserved and thus the
> basic structure of the abelisaurid forelimb remains poorly understood.
> Until recently, the Upper Cretaceous Maevarano Formation of
> northwestern Madagascar has produced numerous exceptional specimens of
> the abelisaurid theropod Majungasaurus crenatissimus but comparatively
> little forelimb material. A recently discovered articulated skeleton
> of Majungasaurus preserves a virtually complete pectoral girdle and
> forelimb, which, along with additional isolated forelimb elements,
> affords important new insights into the structure of these elements.
> New specimens of the scapulocoracoid and humerus allow more detailed
> description of their morphology, and antebrachial and manual elements
> are described for the first time. The radius and ulna are
> approximately one-quarter the length of the humerus and both have
> expanded proximal and distal articular surfaces relative to their
> narrow diaphyses. The manus consists of four digits, each composed of
> a short metacarpal and one (digits I and IV) or two (digits II and
> III) phalanges. No ossified carpals are present. The proportions of
> the brachium and antebrachium are stout, more similar to the condition
> in Carnotaurus than in Aucasaurus. We reinterpret manual digit
> identities in Aucasaurus and Carnotaurus based on new information
> provided by the manus of Majungasaurus. Overall, the morphology of the
> forelimb in Majungasaurus reveals that abelisaurids share an extremely
> reduced, unique morphology that is dissimilar to the more typical
> theropod condition seen in other ceratosaurs.
>
> Also:
>
> http://www.vertpaleo.org/source/blog/post.cfm/press-release-paleontologists-give-madagascar-s-fiercest-dinosaur-a-hand