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dc.contributor.author
Rangel, Caio
dc.contributor.author
Carneiro, Leonardo
dc.contributor.author
Paglarelli Bergqvist, Lílian
dc.contributor.author
Olivera, Édison
dc.contributor.author
Goin, Francisco Javier
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dc.contributor.author
Babot, María Judith
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dc.date.available
2020-10-01T19:02:40Z
dc.date.issued
2019-06
dc.identifier.citation
Rangel, Caio; Carneiro, Leonardo; Paglarelli Bergqvist, Lílian; Olivera, Édison; Goin, Francisco Javier; et al.; Diversity, affinities and adaptations of the Basal Sparassodont patene Simpson, 1935 (Mammalia, Metatheria); Asociación Paleontológica Argentina; Ameghiniana; 56; 4; 6-2019; 1-138
dc.identifier.issn
0002-7014
dc.identifier.uri
http://hdl.handle.net/11336/115310
dc.description.abstract
Sparassodonts were the main mammalian predators during most of the Cenozoic in South America. The lower Eocene Itaboraí Basin/ Formation includes the second oldest fossil records of this group in South America: Patene Simpson and cf. Nemolestes Ameghino. Patene is by far the most abundant sparassodont from this formation, with more than 30 specimens referable to a single taxon, Patene simpsoni Paula Couto. Some specimens recovered from the Quebrada de Los Colorados Formation (formerly Lumbrera Formation – middle Eocene) in Northwestern Argentina have been also referred to P. simpsoni. In order to test the affinities of Patene and the taxonomy of the Argentinean specimens, we performed a review of the genus. Specimens of Patene from Northwestern Argentina show significant differences from the specimen from Brazil, including: smaller size; a relatively larger paraconid; and smaller metaconid, entoconid and hypoconid. As a result, the specimens from the Quebrada de Los Colorados Formation are assigned to a new taxon, Patene coloradensis sp. nov. The results of our phylogenetic analysis recover Patene as a basal sparassodont and support previous hypotheses that exclude Patene from the “Hathliacynidae”. The results also supported the hypothesis that Allqokirus australis Marshall & Muizon and Mayulestes ferox Muizon from the Tiupampa Basin (Santa Lucía Formation, lower Paleocene – Tiupampan SALMA), Bolivia, are the oldest known representatives of the Sparassodonta. The results also supported the monophyly of the Pucadelphyda with the inclusion of the Jaskhadelphyidae and closely related taxa in this group in addition to the Pucadelphyidae and Sparassodonta. The late Cretaceous North American Varalphadon Johanson was not recovered as a representative of the Sparassodonta in our phylogenetic analysis. Based on our results and the current fossil record, the Sparassodonta should be considered an endemic South American lineage.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Asociación Paleontológica Argentina
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dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
EOCENE
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ITABORAÍ BASIN
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MAYULESTIDAE
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PUCADELPHYIDA
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Paleontología
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dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Diversity, affinities and adaptations of the Basal Sparassodont patene Simpson, 1935 (Mammalia, Metatheria)
dc.title
Diversidad, afinidades y adaptaciones del 4 Patene Simpson, 1935 (Mammalia, Metatheria)
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2020-08-19T19:38:41Z
dc.identifier.eissn
1851-8044
dc.journal.volume
56
dc.journal.number
4
dc.journal.pagination
1-138
dc.journal.pais
Argentina
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dc.journal.ciudad
Ciudad Autónoma de Buenos Aires
dc.description.fil
Fil: Rangel, Caio. Universidade Federal do Mato Grosso do Sul; Brasil
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Fil: Carneiro, Leonardo. Sociedade de História Natural. Laboratório de Paleontologia e Paleoecologia; Brasil. Universidade Federal do Rio de Janeiro; Brasil
dc.description.fil
Fil: Paglarelli Bergqvist, Lílian. Universidade Federal do Rio de Janeiro; Brasil
dc.description.fil
Fil: Olivera, Édison. Universidade Federal de Pernambuco; Brasil
dc.description.fil
Fil: Goin, Francisco Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Paleontología Vertebrados; Argentina
dc.description.fil
Fil: Babot, María Judith. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; Argentina. Fundación Miguel Lillo; Argentina
dc.journal.title
Ameghiniana
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.ameghiniana.org.ar/index.php/ameghiniana/article/view/1013
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.5710/AMGH.06.05.2019.3222
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