Re: [dinosaur] Zupaysaurus braincase morphology (free pdf)

The paper now has a free pdf in the October issue of Journal of Vertebrate
Paleontology:

Ariana Paulina-Carabajal, Martín D. Ezcurra & Fernando E. Novas (2019)
New information on the braincase and endocranial morphology of the Late
Triassic neotheropod Zupaysaurus rougieri using Computed Tomography data
Journal of Vertebrate Paleontology Article: e1630421
doi: https://urldefense.proofpoint.com/v2/url?u=https-3A__doi.org_10.1080_02724634.2019.1630421&d=DwIFaQ&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=Ry_mO4IFaUmGof_Yl9MyZgecRCKHn5g4z1CYJgFW9SI&m=Z_N-BXETqeva5o9y_FEw3p4mTou1kTec4GKMT0LFNHU&s=dxuSnB3FtmTkEcxqFTb2gYkGP_E1UDjE3ffJWCrbsMA&e= 
https://urldefense.proofpoint.com/v2/url?u=https-3A__www.tandfonline.com_doi_full_10.1080_02724634.2019.1630421&d=DwIFaQ&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=Ry_mO4IFaUmGof_Yl9MyZgecRCKHn5g4z1CYJgFW9SI&m=Z_N-BXETqeva5o9y_FEw3p4mTou1kTec4GKMT0LFNHU&s=1DV5ju1osLXUZRKvs5uwRywvZTl3rPy_dQK5uClGYiE&e= 

Free pdf:

https://urldefense.proofpoint.com/v2/url?u=https-3A__www.tandfonline.com_doi_pdf_10.1080_02724634.2019.1630421-3FneedAccess-3Dtrue&d=DwIFaQ&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=Ry_mO4IFaUmGof_Yl9MyZgecRCKHn5g4z1CYJgFW9SI&m=Z_N-BXETqeva5o9y_FEw3p4mTou1kTec4GKMT0LFNHU&s=AOgnC8JvjThpLUFGm-sMQ6aR2eskC0e8OnYZYYtjIDE&e= 

On Fri, Aug 2, 2019 at 7:53 AM Ben Creisler <[email protected]> wrote:

>
> Ben Creisler
> [email protected]
>
> A new paper:
>
> Ariana Paulina-Carabajal, Martín D. Ezcurra & Fernando E. Novas (2019)
> New information on the braincase and endocranial morphology of the Late
> Triassic neotheropod Zupaysaurus rougieri using Computed Tomography data
> Journal of Vertebrate Paleontology Article: e1630421
> doi: https://urldefense.proofpoint.com/v2/url?u=https-3A__doi.org_10.1080_02724634.2019.1630421&d=DwIFaQ&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=Ry_mO4IFaUmGof_Yl9MyZgecRCKHn5g4z1CYJgFW9SI&m=Z_N-BXETqeva5o9y_FEw3p4mTou1kTec4GKMT0LFNHU&s=dxuSnB3FtmTkEcxqFTb2gYkGP_E1UDjE3ffJWCrbsMA&e= 
> https://urldefense.proofpoint.com/v2/url?u=https-3A__www.tandfonline.com_doi_full_10.1080_02724634.2019.1630421&d=DwIFaQ&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=Ry_mO4IFaUmGof_Yl9MyZgecRCKHn5g4z1CYJgFW9SI&m=Z_N-BXETqeva5o9y_FEw3p4mTou1kTec4GKMT0LFNHU&s=1DV5ju1osLXUZRKvs5uwRywvZTl3rPy_dQK5uClGYiE&e= 
>
>
> Zupaysaurus rougieri is an early neotheropod from the middle Norian Los
> Colorados Formation of northwestern Argentina represented by an almost
> complete skull and several postcranial bones. Most of its braincase
> morphology has remained obscured by other skull bones and sediment.
> Additional mechanical preparation and X-ray computed tomography on the
> single known specimen of Zupaysaurus has allowed a detailed description of
> the braincase, the cranial endocast, and the inner ear of this Triassic
> dinosaur. Basal theropod braincases are poorly sampled and there is little
> information on this region, and even poorer knowledge on the brain and
> inner ear anatomy of Triassic forms. The virtual reconstruction of the
> braincase of Zupaysaurus shows anteroventrally oriented, finger-like
> basipterygoid processes, an elongate and horizontally projected cultriform
> process, and well-developed preotic pendant, basisphenoid recess, and
> subsellar recess. The endocranial morphology is partially reconstructed,
> showing an anteroposteriorly short but dorsoventrally tall cranial
> endocast, with well-marked demarcations between the forebrain, midbrain,
> and hindbrain. The inner ear preserves the three semicircular canals, but
> not the lagena. The posterior semicircular canal is proportionally large
> when compared with that of other theropods. The new information presented
> here on Zupaysaurus rougieri contributes to the knowledge of the
> neuroanatomy of basal theropods and sheds light on the evolutionary
> patterns of the braincase morphology in nonavian Theropoda.
>
>
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