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Re: Pdf requests was Re: JVP 32 (3): Argentinean neosauropods and a Chinese enantiornithean
Thanks to Denver, Dan and Mike for sending me these papers, I now have them
all. If anyone else wants one, feel free to contact me.
Best,
Zach
>________________________________
> From: Zach Armstrong <zach.armstrong64@yahoo.com>
>To: "dinosaur@usc.edu" <dinosaur@usc.edu>
>Sent: Friday, May 4, 2012 5:39 PM
>Subject: Pdf requests was Re: JVP 32 (3): Argentinean neosauropods and a
>Chinese enantiornithean
>
>I apologize for bothering the list on another pdf request, but I would be
>grateful to anyone who could send me a copy of Salgado, Canudo, Garrido and
>Carballido (2012) and Mannion and Otero (2012) (see below for full references).
>
>Also, does anyone know where I might obtain a pdf of: Gilmore, C.W. 1936.
>Osteology of Apatosaurus with special reference to specimens in the Carnegie
>Museum. Memoirs of the Carnegie Museum 11:175-300? I've searched the internet
>for a copy but cannot find one.
>
>Best,
>
>Zach
>
>
>
>
>>________________________________
>> From: Brad McFeeters <archosauromorph2@hotmail.com>
>>To: dinosaur@usc.edu
>>Sent: Thursday, May 3, 2012 9:57 AM
>>Subject: JVP 32 (3): Argentinean neosauropods and a Chinese enantiornithean
>>
>>
>>Salgado, L., J.I. Canudo, A.C. Garrido & J.C. Carballido, 2012. Evidence of
>>gregariousness in rebbachisaurids (Dinosauria, Sauropoda, Diplodocoidea) from
>>the Early Cretaceous of Neuquén (Rayoso Formation), Patagonia, Argentina.
>> Journal of Vertebrate Paleontology 32 (3):603-613.
>>
>>Abstract: For the first time an association of adult and juvenile
>>rebbachisaurid sauropods is described. The material comes from the Early
>>Cretaceous locality of Agrio del Medio (Neuquén, Argentina). The three
>>specimens apparently formed a single group, and their death seems to have
>>been almost simultaneous. The two juvenile specimens are represented by axial
>>and appendicular bones. They show a close relationship with *Zapalasaurus
>>bonapartei*, which comes from a different sector of the same basin, but which
>>is approximately the same age. The discovery at Agrio del Medio suggests th
us behavior. The paleoenvironments in which rebbachisaurids are normally
recorded implies a greater tolerance toward extremely arid environments than
that shown by macronarian sauropods.
>>
>>
>>
>>Mannion, P.D. & A. Otero, 2012. A reappraisal of the Late Cretaceous
>>Argentinean sauropod dinosaur *Argyrosaurus superbus*, with a description of
>>a new titanosaur genus. Journal of Vertebrate Pa
>bus* is one of the earliest-named Argentinean dinosaurs. The holotype
>comprises a complete forelimb, probably from the upper member of the Bajo
>Barreal Formation (Late Cretaceous), Chubut Province. Numerous remains have
>been referred to *Argyrosaurus* from Argentina and Uruguay; however, the type
>specimen has not been adequately diagnosed and referrals have predominantly
>been based upon their large size. Here we redescribe *Argyrosaurus*,
>demonstrating it to be a valid titanosaur genus based on five autapomorphies,
>as well as an unique character combination. The exact placement of
>*Argyrosaurus* within Titanosauria is uncertain, although the probable
>presence of carpal bones, otherwise unknown in titanosaurs, may indicate a
>basal position. None of the referred remains can be attributed to
>*Argyrosaurus*, and most should be regarded as indeterminate titanosauriforms.
>The exception to this is a partial skeleton from the
>lower member of the Bajo Barreal Formation (early Late Cretaceous), Chubut
>Province, comprising dorsal and caudal vertebrae, as well as numerous
>appendicular elements. This specimen is distinct from *Argyrosaurus* and can
>also be differentiated from other sauropods based on an unusual character
>combination (including plesiomorphic tarsus), plus one autapomorphy.
>*Elaltitan lilloi*, gen. et sp. nov., displays numerous titanosaur characters
>and shares several features with derived taxa such as *Neuquensaurus*,
>*Opisthocoelicaudia*, *Rapetosaurus*, *Saltasaurus*, and *Trigonosaurus*.
>*Elaltitan* can be referred to Lithostrotia; however, its precise position
>within this clade must await future phylogenetic analysis
tion of the titanosaurs *Argyrosaurus* and *Elaltitan* provides new information
on this diverse but still poorly understood clade.
>>
>>
>>
>>
>>Hu, D., X. Xu, L. Hou & C. Sullivan, 2012. A new enantiornithine bird from
>>the Lower Cretaceous of Western Liaoning, China, and its implications for
>>early avian evolution. Journal of Vertebrate Paleontology 32 (3): 639-645.
>>
>>Abstract: Recent studies have blurred the distinctness of two major avian
>>groups: the Enantiornithes, a major radiation of early birds in the
>>Cretaceous, and the Ornithuromorpha, the clade including extant birds. Here
>>we describe a new enantiornithine bird from the Lower Cretaceous Jiufotang
>>Formation of western Liaoning, China, *Xiangornis shenmi*, gen. et sp. nov.,
>>which further reduces the morphological gap between the two groups.
>>*Xiangornis shenmi* has several enantiornithine features, including a furcula
>>with a significantly elongated hypocleidium, a coracoid with a convex lateral
>>margin, and a minor metacarpal that extends further distally than the major
>>metacarpal. However, it also possesses some derived ornithurine features,
>>such as a short alular metacarpal (about one-sixth as long as the major
>>metacarpal) that is completely fused to the major metacarpal, a large
>>extensor process on the alular metacarpal, pr
>between
>the minor and major metacarpals, and an intermetacarpal space positioned
>significantly distal to the alular metacarpal. This new find indicates that a
>carpometacarpal morphology similar to that seen in modern birds probably
>evolved independently in enantiornithines and appeared earlier than in
>Ornithuromorpha, and demonstrates that character evolution in early birds was
>more complex than previously believed.
>>
>>
>>
>
>
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