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Re: Qijianglong, new mamenchisaurid sauropod from Late Jurassic of China (free pdf)



Note that the pdf is now free:


http://www.tandfonline.com/doi/pdf/10.1080/02724634.2014.889701

On Tue, Jan 27, 2015 at 7:50 AM, Ben Creisler <bcreisler@gmail.com> wrote:
> Ben Creisler
> bcreisler@gmail.com
>
> A new online paper:
>
> Lida Xing, Tetsuto Miyashita, Jianping Zhang, Daqing Li, Yong Ye, Toru
> Sekiya, Fengping Wang & Philip J. Currie (2015)
> A new sauropod dinosaur from the Late Jurassic of China and the
> diversity, distribution, and relationships of mamenchisaurids.
> Journal of Vertebrate Paleontology (advance online publication)
> DOI:10.1080/02724634.2014.889701
> http://www.tandfonline.com/doi/full/10.1080/02724634.2014.889701#.VMexhWjF_To
>
> Qijianglong guokr, gen. et sp. nov., represents a mamenchisaurid
> eusauropod from the Late Jurassic of southern China. The holotype
> consists of an incomplete skull, partly articulated axial skeleton,
> and fragmentary appendicular skeleton. A well-preserved braincase and
> skull roof provide rare insights into the poorly known neurocranial
> anatomy of mamenchisaurids and reveal a unique combination of
> characters such as an accessory tuber at the base of planar
> basipterygoid process and parietal excluding frontal from the anterior
> margin of the supratemporal fenestra. The cervical vertebrae have a
> distinct finger-like process extending from the postzygapophyseal
> process beside a zygapophyseal contact. Qijianglong is the first
> mamenchisaurid from the Late Jurassic of China that is definitively
> distinct from Mamenchisaurus, indicating greater morphological and
> taxonomic diversity of the poorly represented Late Jurassic
> mamenchisaurids. The occurrence of Qijianglong is consistent with a
> scenario in which mamenchisaurids formed an endemic sauropod fauna in
> the Late Jurassic of Asia. Phylogenetically, Qijianglong represents a
> relatively plesiomorphic mamenchisaurid lineage. The mamenchisaurids
> form an ancient clade of basal eusauropod dinosaurs that likely
> appeared in the Early Jurassic. A cladistic analysis highlights the
> interrelationships of mamenchisaurids and suggests guidelines for
> mamenchisaurid taxonomic revision. It may be desirable to restrict
> generic names to the type species in order to avoid confusion.
>
> http://zoobank.org/urn:lsid:zoobank.org:pub:F93276CF-71FE-472E-9114-68294547C2A9
>
> SUPPLEMENTAL DATA—Supplemental materials are available for this
> article for free at www.tandfonline.com/UJVP