An enigmatic new archosauriform from the Carnian-Norian, Upper Triassic, Ischigualasto Formation of northwestern Argentina

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...

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Detalles Bibliográficos
Autores: Yáñez, Imanol, Pol, Diego, Leardi, Juan Martín, Alcober, Oscar A., Martínez, Ricardo Néstor
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2021
País:Argentina
Institución:Consejo Nacional de Investigaciones Científicas y Técnicas
Repositorio:CONICET Digital (CONICET)
Idioma:inglés
OAI Identifier:oai:ri.conicet.gov.ar:11336/213583
Acceso en línea:http://hdl.handle.net/11336/213583
Access Level:acceso abierto
Palabra clave:ARCHOSAURIA
ARCHOSAURIFORMES
ARGENTINA
ISCHIGUALASTO
LATE TRIASSIC
OSTEOLOGY
PHYLOGENY
TAXONOMY
https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
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oai_identifier_str oai:ri.conicet.gov.ar:11336/213583
network_acronym_str AR
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spelling 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 Técnicas2024-05-08T14:00:47Zoai: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:34982024-05-08 14:00:48.119CONICET 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
https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
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
https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
topic ARCHOSAURIA
ARCHOSAURIFORMES
ARGENTINA
ISCHIGUALASTO
LATE TRIASSIC
OSTEOLOGY
PHYLOGENY
TAXONOMY
https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
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
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1799195700744945664
score 15,81155

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