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dc.contributor.author
Yáñez, Imanol
dc.contributor.author
Pol, Diego
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Leardi, Juan Martín
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Alcober, Oscar A.
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Martínez, Ricardo Néstor
dc.date.available
2023-09-29T14:28:38Z
dc.date.issued
2021-09
dc.identifier.citation
Yáñez, Imanol; Pol, Diego; Leardi, Juan Martín; Alcober, Oscar A.; Martínez, Ricardo Néstor; An enigmatic new archosauriform from the Carnian-Norian, Upper Triassic, Ischigualasto Formation of northwestern Argentina; Polish Academy of Sciences. Institute of Paleobiology; Acta Palaeontologica Polonica; 66; 9-2021; 1-25
dc.identifier.issn
0567-7920
dc.identifier.uri
http://hdl.handle.net/11336/213583
dc.description.abstract
In this contribution we introduce a new Late Triassic archosaur, Incertovenator longicollum gen. et sp. nov., with an unusual combination of character states that are present in certain early avemetatarsalian and pseudosuchian archosaur clades. The holotype consists of a partial postcranial skeleton, preserving most of the axial skeleton and displaying a marked anteroposterior elongation in the cervical vertebrae. We include I. longicollum gen. et sp. nov. into one of the most comprehensive early archosaur phylogenetic data sets available, and recover it as either an early diverging avemetatarsalian, closely associated with the clade Aphanosauria and Ornithodira, or as an early diverging loricatan closely related to Mandasuchus tanyauchen in the most parsimonious trees. We further evaluate which alternative phylogenetic positions can I. longicollum gen. et sp. nov. take in the suboptimal trees, and determined which character states support those alternative positions in comparison with those of the unconstrained analysis. The analyses recover the new taxon in three main general phylogenetic placements within Archosauria, as well as one position outside this clade, highlighting widespread morphological evolutionary convergence towards neck elongation in several clades of Triassic archosauriforms.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Polish Academy of Sciences. Institute of Paleobiology
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
ARCHOSAURIA
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ARCHOSAURIFORMES
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ARGENTINA
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ISCHIGUALASTO
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LATE TRIASSIC
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OSTEOLOGY
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PHYLOGENY
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TAXONOMY
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Paleontología
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Ciencias de la Tierra y relacionadas con el Medio Ambiente
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CIENCIAS NATURALES Y EXACTAS
dc.title
An enigmatic new archosauriform from the Carnian-Norian, Upper Triassic, Ischigualasto Formation of northwestern Argentina
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2023-09-29T11:15:04Z
dc.identifier.eissn
1732-2421
dc.journal.volume
66
dc.journal.pagination
1-25
dc.journal.pais
Polonia
dc.description.fil
Fil: Yáñez, Imanol. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Centro de Investigaciones de la Geosfera y Biosfera. Universidad Nacional de San Juan. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones de la Geosfera y Biosfera; Argentina
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Fil: Pol, Diego. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Museo Paleontológico Egidio Feruglio; Argentina
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Fil: Leardi, Juan Martín. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
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Fil: Alcober, Oscar A.. Universidad Nacional de San Juan; Argentina
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Fil: Martínez, Ricardo Néstor. Universidad Nacional de San Juan; Argentina
dc.journal.title
Acta Palaeontologica Polonica
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://doi.org/10.4202/app.00806.2020
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.4202/APP.00806.2020
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