An enigmatic new archosauriform from the Carnian-Norian, Upper Triassic, Ischigualasto Formation of northwestern Argentina
- Autores
- Yáñez, Imanol; Pol, Diego; Leardi, Juan Martín; Alcober, Oscar A.; Martínez, Ricardo Néstor
- Año de publicación
- 2021
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- 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.
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
Fil: Pol, Diego. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Museo Paleontológico Egidio Feruglio; Argentina
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
Fil: Alcober, Oscar A.. Universidad Nacional de San Juan; Argentina
Fil: Martínez, Ricardo Néstor. Universidad Nacional de San Juan; Argentina - Materia
-
ARCHOSAURIA
ARCHOSAURIFORMES
ARGENTINA
ISCHIGUALASTO
LATE TRIASSIC
OSTEOLOGY
PHYLOGENY
TAXONOMY - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/213583
Ver los metadatos del registro completo
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CONICET Digital (CONICET) |
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An enigmatic new archosauriform from the Carnian-Norian, Upper Triassic, Ischigualasto Formation of northwestern ArgentinaYáñez, ImanolPol, DiegoLeardi, Juan MartínAlcober, Oscar A.Martínez, Ricardo NéstorARCHOSAURIAARCHOSAURIFORMESARGENTINAISCHIGUALASTOLATE TRIASSICOSTEOLOGYPHYLOGENYTAXONOMYhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1In 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.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; ArgentinaFil: Pol, Diego. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Museo Paleontológico Egidio Feruglio; ArgentinaFil: 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"; ArgentinaFil: Alcober, Oscar A.. Universidad Nacional de San Juan; ArgentinaFil: Martínez, Ricardo Néstor. Universidad Nacional de San Juan; ArgentinaPolish Academy of Sciences. Institute of Paleobiology2021-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/213583Yáñez, 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; 1-250567-79201732-2421CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://doi.org/10.4202/app.00806.2020info:eu-repo/semantics/altIdentifier/doi/10.4202/APP.00806.2020info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:09:33Zoai:ri.conicet.gov.ar:11336/213583instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:09:33.639CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
An enigmatic new archosauriform from the Carnian-Norian, Upper Triassic, Ischigualasto Formation of northwestern Argentina |
title |
An enigmatic new archosauriform from the Carnian-Norian, Upper Triassic, Ischigualasto Formation of northwestern Argentina |
spellingShingle |
An enigmatic new archosauriform from the Carnian-Norian, Upper Triassic, Ischigualasto Formation of northwestern Argentina Yáñez, Imanol ARCHOSAURIA ARCHOSAURIFORMES ARGENTINA ISCHIGUALASTO LATE TRIASSIC OSTEOLOGY PHYLOGENY TAXONOMY |
title_short |
An enigmatic new archosauriform from the Carnian-Norian, Upper Triassic, Ischigualasto Formation of northwestern Argentina |
title_full |
An enigmatic new archosauriform from the Carnian-Norian, Upper Triassic, Ischigualasto Formation of northwestern Argentina |
title_fullStr |
An enigmatic new archosauriform from the Carnian-Norian, Upper Triassic, Ischigualasto Formation of northwestern Argentina |
title_full_unstemmed |
An enigmatic new archosauriform from the Carnian-Norian, Upper Triassic, Ischigualasto Formation of northwestern Argentina |
title_sort |
An enigmatic new archosauriform from the Carnian-Norian, Upper Triassic, Ischigualasto Formation of northwestern Argentina |
dc.creator.none.fl_str_mv |
Yáñez, Imanol Pol, Diego Leardi, Juan Martín Alcober, Oscar A. Martínez, Ricardo Néstor |
author |
Yáñez, Imanol |
author_facet |
Yáñez, Imanol Pol, Diego Leardi, Juan Martín Alcober, Oscar A. Martínez, Ricardo Néstor |
author_role |
author |
author2 |
Pol, Diego Leardi, Juan Martín Alcober, Oscar A. Martínez, Ricardo Néstor |
author2_role |
author author author author |
dc.subject.none.fl_str_mv |
ARCHOSAURIA ARCHOSAURIFORMES ARGENTINA ISCHIGUALASTO LATE TRIASSIC OSTEOLOGY PHYLOGENY TAXONOMY |
topic |
ARCHOSAURIA ARCHOSAURIFORMES ARGENTINA ISCHIGUALASTO LATE TRIASSIC OSTEOLOGY PHYLOGENY TAXONOMY |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
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. 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 Fil: Pol, Diego. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Museo Paleontológico Egidio Feruglio; Argentina 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 Fil: Alcober, Oscar A.. Universidad Nacional de San Juan; Argentina Fil: Martínez, Ricardo Néstor. Universidad Nacional de San Juan; Argentina |
description |
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. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-09 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/213583 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 0567-7920 1732-2421 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/213583 |
identifier_str_mv |
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 0567-7920 1732-2421 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/https://doi.org/10.4202/app.00806.2020 info:eu-repo/semantics/altIdentifier/doi/10.4202/APP.00806.2020 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Polish Academy of Sciences. Institute of Paleobiology |
publisher.none.fl_str_mv |
Polish Academy of Sciences. Institute of Paleobiology |
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reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
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Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
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dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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13.070432 |