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dc.contributor.author
Abello, María Alejandra
dc.date.available
2017-03-06T19:47:16Z
dc.date.issued
2013-06
dc.identifier.citation
Abello, María Alejandra; Analysis of dental homologies and phylogeny of Paucituberculata (Mammalia: Marsupialia); Oxford University Press; Biological Journal Of The Linnean Society; 109; 2; 6-2013; 441-465
dc.identifier.issn
0024-4066
dc.identifier.uri
http://hdl.handle.net/11336/13571
dc.description.abstract
The Paucituberculata is an endemic group of South American marsupials, recorded from the early Cenozoic up to the present. In this report, the most comprehensive phylogenetic analysis of Paucituberculata to date is presented. Fifty-seven terminal species were scored for 74 new and re-examined characters. Homologies of dental characters used in previous systematic studies were critically reviewed to evaluate their inclusion in the analysis. Phylogenetic results corroborated two major paucituberculatan clades, Palaeothentoidea and Caenolestoidea, and the main palaeothentoid groupings: Pichipilidae, Palaeothentidae, and Abderitidae. Taxon sampling and reinterpretations of molar cusp and crest homologies played an important role in the generation of new phylogenetic hypotheses. The main differences with respect to previous phylogenies were focused on palaeothentoid relationships: Palaeothentes boliviensis and Pilchenia lucina are not members of Palaeothentidae but instead clustered with Pilchenia intermedia and P. antiqua, forming the sister-group of a Palaeothentidae + Abderitidae clade, and Titanothentes simpsoni, previously considered a palaeothentine, is nested within the Acdestinae clade. Based on the time-calibrated phylogeny, the following stages in the paucituberculatan evolutionary history are suggested: origin of the group, in the Paleocene to early Eocene at the latest, split of Caenolestoidea and Palaeothentoidea clades during the late early to middle Eocene, evolutionary radiation of palaeothentid and abderitid lineages near the Oligocene–Eocene boundary, and decreased diversity and extinction of palaeothentoids during the middle Miocene.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Oxford University Press
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Abderitidae
dc.subject
Caenolestidae
dc.subject
Caenozoic
dc.subject
Palaeothentidae
dc.subject
South America
dc.subject.classification
Paleontología
dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Analysis of dental homologies and phylogeny of Paucituberculata (Mammalia: Marsupialia)
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-03-06T14:07:28Z
dc.identifier.eissn
1095-8312
dc.journal.volume
109
dc.journal.number
2
dc.journal.pagination
441-465
dc.journal.pais
Reino Unido
dc.journal.ciudad
Oxford
dc.description.fil
Fil: Abello, María Alejandra. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Laboratorio de Sistemática y Biología Evolutiva; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.journal.title
Biological Journal Of The Linnean Society
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1111/bij.12048
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/biolinnean/article-lookup/doi/10.1111/bij.12048
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