[dinosaur] Dinosaur ilium from Late Triassic of Brazil (free pdf)

Ben Creisler
[email protected]

A new paper:

Free pdf:


Maurício S. Garcia, Flávio A. Pretto, Sérgio Dias-Da-Silva, and Rodrigo T.
Muller (2019)
A dinosaur ilium from the Late Triassic of Brazil with comments on
key-character supporting Saturnaliinae.
Anais da Academia Brasileira de Ciências 91, suppl. 2: e20180614
doi: https://urldefense.proofpoint.com/v2/url?u=http-3A__dx.doi.org_10.1590_0001-2D3765201920180614&d=DwIFaQ&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=Ry_mO4IFaUmGof_Yl9MyZgecRCKHn5g4z1CYJgFW9SI&m=NzqIOn9LWoD6gyBwe6MYy_gcWAsQUO5GPt0MZ54qqsQ&s=OgSYNS_xLZF1PbMxI93POOJ9Lua6HoBe11j6h9lLA-M&e= .
https://urldefense.proofpoint.com/v2/url?u=http-3A__www.scielo.br_scielo.php-3Fscript-3Dsci-5Fabstract-26pid-3DS0001-2D37652019000400516-26lng-3Den-26nrm-3Diso-26tlng-3Den&d=DwIFaQ&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=Ry_mO4IFaUmGof_Yl9MyZgecRCKHn5g4z1CYJgFW9SI&m=NzqIOn9LWoD6gyBwe6MYy_gcWAsQUO5GPt0MZ54qqsQ&s=ovIh90iD9l7KG56Gf7kAA0zDX1EWDI48RN7yPEdEJNM&e= 

Free pdf:
https://urldefense.proofpoint.com/v2/url?u=http-3A__www.scielo.br_pdf_aabc_v91s2_0001-2D3765-2Daabc-2D91-2Ds2-2De20180614.pdf&d=DwIFaQ&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=Ry_mO4IFaUmGof_Yl9MyZgecRCKHn5g4z1CYJgFW9SI&m=NzqIOn9LWoD6gyBwe6MYy_gcWAsQUO5GPt0MZ54qqsQ&s=71L9PEb3xlCNj2yj0g5pQADXoHBt7HsY-UjjjirY7uU&e= 


Discoveries in Carnian-aged rocks are establishing a rich and diverse
dinosaurian fauna at the so-called 'dawn of the age of dinosaurs' in the
Late Triassic of Western Gondwana. Accordingly, Brazilian strata from the
Candelária Sequence have contributed extensively to this trend. Here, we
present a new dinosaurian specimen (CAPPA/UFSM 0200) from this geological
unit. The material was collected at a fossiliferous site that had no
previous record of dinosaurs. Our specimen comprises a single ilium, which
we describe in detail. Its anatomy is consistent with Carnian
sauropodomorph dinosaurs, but differs from coeval specimens by several
features, although we do not discard the possibility of these features
being the result of intraspecific variation. In part of our phylogenetic
investigation, CAPPA/UFSM 0200 was recovered within Saturnaliinae, a group
comprised of Carnian sauropodomorphs from South America. However, based on
examination of better-sampled coeval taxa, a character (a strong rugosity
in the ilium) supporting this less inclusive position might be related to
intraspecific variation and so, should be carefully considered. This study
increases the distribution of dinosaur remains in fossiliferous units from
southern Brazil and adds to the discussion regarding intraspecific
variation and its implications in the phylogeny of early dinosaurs.


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This paper was posted earlier on the DML with Research Gate link. Here's
the official version on the journal site:


Bernardo J. González Riga, Matthew C. Lamanna, Alejandro Otero, Leonardo D.
Ortiz David, Alexander W.A. Kellner and Lucio M. Ibiricu (2019)
An overview of the appendicular skeletal anatomy of South American
titanosaurian sauropods, with definition of a newly recognized clade.
Academia Brasileira de Ciências 91(Supp. 2): e20180374
doi: https://urldefense.proofpoint.com/v2/url?u=http-3A__dx.doi.org_10.1590_0001-2D3765201920180374&d=DwIFaQ&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=Ry_mO4IFaUmGof_Yl9MyZgecRCKHn5g4z1CYJgFW9SI&m=NzqIOn9LWoD6gyBwe6MYy_gcWAsQUO5GPt0MZ54qqsQ&s=IBj8VlbcLyhoZMHGWyKqUFZNASCLjEgb-cm-vaLvGIw&e= 
https://urldefense.proofpoint.com/v2/url?u=http-3A__www.scielo.br_scielo.php-3Fscript-3Dsci-5Fabstract-26pid-3DS0001-2D37652019000400514-26lng-3Den-26nrm-3Diso-26tlng-3Den&d=DwIFaQ&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=Ry_mO4IFaUmGof_Yl9MyZgecRCKHn5g4z1CYJgFW9SI&m=NzqIOn9LWoD6gyBwe6MYy_gcWAsQUO5GPt0MZ54qqsQ&s=e145479_z9wl_suoYgnTGQmFFzgyOrOW841jCECEtcM&e= 

Free pdf:
https://urldefense.proofpoint.com/v2/url?u=http-3A__www.scielo.br_pdf_aabc_v91s2_0001-2D3765-2Daabc-2D91-2Ds2-2De20180374.pdf&d=DwIFaQ&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=Ry_mO4IFaUmGof_Yl9MyZgecRCKHn5g4z1CYJgFW9SI&m=NzqIOn9LWoD6gyBwe6MYy_gcWAsQUO5GPt0MZ54qqsQ&s=0yMI0pWUvzm0CZv_rE_yONcPlqgX5_mSw4U4l5yd4Oo&e= 


In the last two decades, the number of phylogenetically informative
anatomical characters recognized in the appendicular skeleton of
titanosaurian sauropod dinosaurs has increased dramatically with the
discovery of new and comparatively complete specimens. The appendicular
skeletal diversity of South American titanosaurs is substantially greater
than was initially appreciated. Moreover, some regions of the appendicular
skeleton, such as the pes, exhibit remarkable variability in form. Multiple
synapomorphies of Titanosauria and the less inclusive clades Lithostrotia
and Saltasauridae consist of characters of the girdles and limbs, although
some of these cannot be entirely separated from the acquisition of very
large body size. Although the phylogenetic definitions of titanosaurian
clades such as Saltasaurinae and Lognkosauria are stable, the taxonomic
content of these clades has varied in recent analyses depending on the
phylogenetic topology recovered. Within Titanosauria, the results of
fourrecent, independent analyses support the existence of a derived
titanosaurian lineage distinct from the ?Saltasaurinae line?, which is
herein termed Colossosauria. At present, this clade is mainly comprised for
taxa of Lognkosauria and Rinconsauria, and is useful in discussions of
titanosaurian lower-level relationships.

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