Re: [dinosaur] Miragaia new specimen and taxonomy of dacentrurine stegosaurs (free pdf)

Blog posts:

Old stegosaur alters history of armored dinosaurs

https://urldefense.proofpoint.com/v2/url?u=https-3A__blogs.scientificamerican.com_laelaps_old-2Dstegosaur-2Dalters-2Dhistory-2Dof-2Darmored-2Ddinosaurs_&d=DwIFaQ&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=Ry_mO4IFaUmGof_Yl9MyZgecRCKHn5g4z1CYJgFW9SI&m=9y9npT9skDFDwDf1YLzYPE6YqHlUP6tHfARDuQXv_bs&s=mLfCdDWvUe_zPUb3V3kUIdLGUNmxNsl7Lhje5wVGZ8Q&e= 

in Portuguese:
Novo esqueleto de dinossauro Miragaia dá novas pistas sobre a evolução dos
estegossauros e resolve antigos mistérios na paleontologia

https://urldefense.proofpoint.com/v2/url?u=http-3A__lusodinos.blogspot.com_2019_11_novo-2Desqueleto-2Dde-2Ddinossauro-2Dmiragaia.html&d=DwIFaQ&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=Ry_mO4IFaUmGof_Yl9MyZgecRCKHn5g4z1CYJgFW9SI&m=9y9npT9skDFDwDf1YLzYPE6YqHlUP6tHfARDuQXv_bs&s=nlK2kviTG0MmuVKxYD-r9n6u1UUSJRvivL2gD67ONGQ&e= 


News:

Miragaia longispinus...

https://urldefense.proofpoint.com/v2/url?u=https-3A__www.cmjornal.pt_sociedade_detalhe_20191113-2D1916-2Dpaleontologos-2Dreclassificam-2Ddinossauro-2Damericano-2Dcom-2Dbase-2Dem-2Despecie-2Dportuguesa-3Fref-3DHP-5FCMaoMinuto&d=DwIFaQ&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=Ry_mO4IFaUmGof_Yl9MyZgecRCKHn5g4z1CYJgFW9SI&m=9y9npT9skDFDwDf1YLzYPE6YqHlUP6tHfARDuQXv_bs&s=xS5XNL4HNujnrKMLZ7HghalaD3Yt3ctVfPgcJiKpc60&e= 

https://urldefense.proofpoint.com/v2/url?u=https-3A__www.tsf.pt_portugal_cultura_paleontologos-2Dreclassificam-2Ddinossauro-2Damericano-2Dcom-2Dbase-2Dem-2Despecie-2Dportuguesa-2D11511573.html&d=DwIFaQ&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=Ry_mO4IFaUmGof_Yl9MyZgecRCKHn5g4z1CYJgFW9SI&m=9y9npT9skDFDwDf1YLzYPE6YqHlUP6tHfARDuQXv_bs&s=C1B_klWbGJaZ3b2cNdlHt3N5LvyOuFcBuZoEF6JKR0o&e= 

On Wed, Nov 13, 2019 at 11:17 AM Thomas Richard Holtz <[email protected]>
wrote:

> The abstract's final sentence understates their point: they sink
> Alcovasaurus into Miragaia.
>
> On Wed, Nov 13, 2019 at 1:55 PM Ben Creisler <[email protected]> wrote:
>
>>
>> Ben Creisler
>> [email protected]
>>
>> A new paper in open access:
>>
>> Francisco Costa & Octávio Mateus (2019)
>> Dacentrurine stegosaurs (Dinosauria): A new specimen of Miragaia
>> longicollum from the Late Jurassic of Portugal resolves taxonomical
>> validity and shows the occurrence of the clade in North America
>> PLoS ONE 14(11): e0224263.
>> doi: https://urldefense.proofpoint.com/v2/url?u=https-3A__doi.org_10.1371_journal.pone.0224263&d=DwIFaQ&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=Ry_mO4IFaUmGof_Yl9MyZgecRCKHn5g4z1CYJgFW9SI&m=9y9npT9skDFDwDf1YLzYPE6YqHlUP6tHfARDuQXv_bs&s=eRRXZjyuMD5-QE3b4xIsOeQSLBw9XxCzq3rlDrgutqY&e= 
>> <https://urldefense.proofpoint.com/v2/url?u=https-3A__doi.org_10.1371_journal.pone.0224263&d=DwMFaQ&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=Ry_mO4IFaUmGof_Yl9MyZgecRCKHn5g4z1CYJgFW9SI&m=fmSVOFJKdh-s0pB9kpyAFl9wOxuMW6iNvgG-pAimXOs&s=mfZpLpCjxbg6qsrNePdx3Fwz8c1jn0iZAuyKBqm6a5g&e=>
>> https://urldefense.proofpoint.com/v2/url?u=https-3A__journals.plos.org_plosone_article-3Fid-3D10.1371_journal.pone.0224263&d=DwIFaQ&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=Ry_mO4IFaUmGof_Yl9MyZgecRCKHn5g4z1CYJgFW9SI&m=9y9npT9skDFDwDf1YLzYPE6YqHlUP6tHfARDuQXv_bs&s=3WdnQCeI9TikoqlGTGMjKe0v5Z8wGJr3kcIqCJUxBwE&e= 
>> <https://urldefense.proofpoint.com/v2/url?u=https-3A__journals.plos.org_plosone_article-3Fid-3D10.1371_journal.pone.0224263&d=DwMFaQ&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=Ry_mO4IFaUmGof_Yl9MyZgecRCKHn5g4z1CYJgFW9SI&m=fmSVOFJKdh-s0pB9kpyAFl9wOxuMW6iNvgG-pAimXOs&s=QNOvbAs4z1ltAxhIgR8txq2WbN1L0OIWdkr-hKMJn60&e=>
>> Free pdf:
>>
>> https://urldefense.proofpoint.com/v2/url?u=https-3A__journals.plos.org_plosone_article_file-3Fid-3D10.1371_journal.pone.0224263-26type-3Dprintable&d=DwIFaQ&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=Ry_mO4IFaUmGof_Yl9MyZgecRCKHn5g4z1CYJgFW9SI&m=9y9npT9skDFDwDf1YLzYPE6YqHlUP6tHfARDuQXv_bs&s=gRi8XKFKp2LRDS_vIJeaNS2R1H3JVC_QT2HSCMPOJSM&e= 
>> <https://urldefense.proofpoint.com/v2/url?u=https-3A__journals.plos.org_plosone_article_file-3Fid-3D10.1371_journal.pone.0224263-26type-3Dprintable&d=DwMFaQ&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=Ry_mO4IFaUmGof_Yl9MyZgecRCKHn5g4z1CYJgFW9SI&m=fmSVOFJKdh-s0pB9kpyAFl9wOxuMW6iNvgG-pAimXOs&s=FdHL1hFBYpTpUZlCnXvQRVRH6fAQtz6oTBR875o6frw&e=>
>>
>> The stegosaur species Miragaia longicollum was erected based on a partial
>> anterior skeleton from the Upper Jurassic of Portugal. Until then, almost
>> all stegosaur specimens in Portugal and Spain had been identified as
>> Dacentrurus armatus, the sister taxon of M. longicollum and only other
>> member of the clade Dacentrurinae. The holotypes of the two species have
>> little overlap, since the holotype of D. armatus is mostly a posterior
>> skeleton, so the classification of other specimens to either species is
>> unclear and the validity of M. longicollum has been questioned and debated.
>> Here we describe a largely complete specimen of M. longicollum discovered
>> in 1959 in Atouguia da Baleia, Peniche, Portugal, consisting of both
>> anterior and posterior portions of the skeleton. Comparisons to the
>> holotypes of dacentrurines and other stegosaurs shed light on the
>> convoluted relationships of this group. We conclude that M. longicollum is
>> valid and rather different from D. armatus, and provide a revised diagnosis
>> of M. longicollum, as well as revised diagnoses for D. armatus,
>> Dacentrurinae, and the first diagnosis of the genus Miragaia, granting
>> stability to these taxa and allowing new considerations to be given on the
>> classification of other Iberian stegosaurs. This new specimen is, to date,
>> the most complete dinosaur described from Portugal and the most complete
>> stegosaur described from Europe. Miragaia shared anatomical features that
>> show a close affinity to Alcovasaurus longispinus, confirming this to be
>> the first known dacentrurine stegosaur in America, coherent with the
>> hypothesis of an ephemeral land bridge between North America and Iberia
>> that allowed faunal exchange.
>>
>>
>
> --
>
> Thomas R. Holtz, Jr.
> Email: [email protected]         Phone: 301-405-4084
> Principal Lecturer, Vertebrate Paleontology
>
> Office: Geology 4106, 8000 Regents Dr., College Park MD 20742
>
> Dept. of Geology, University of Maryland
> https://urldefense.proofpoint.com/v2/url?u=http-3A__www.geol.umd.edu_-7Etholtz_&d=DwIFaQ&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=Ry_mO4IFaUmGof_Yl9MyZgecRCKHn5g4z1CYJgFW9SI&m=9y9npT9skDFDwDf1YLzYPE6YqHlUP6tHfARDuQXv_bs&s=ioLAeDCKHBspedigzEhcsnKQpOUN9nwT4pxK_ltjfjY&e= 
>
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>
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>
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>
> Mailing Address:        Thomas R. Holtz, Jr.
>                         Department of Geology
>                         Building 237, Room 1117
>
>                         8000 Regents Drive
>                         University of Maryland
>                         College Park, MD 20742-4211 USA
>