A new large hypercarnivorous crocodyliform from the Maastrichtian of Southern Patagonia, Argentina

Autores
Novas, Fernando Emilio; Pol, Diego; Agnolin, Federico; de Souza Carvalho, Ismar; Manabe, Makoto; Tsuihiji, Takanobu; Rozadilla, Sebastian; Lio, Gabriel L.; Isasi, Marcelo Pablo
Año de publicación
2025
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The first crocodyliform specimen from the Maastrichtian Chorrillo Formation (AustralBasin, Patagonia) is here described. The discovery was made about 30 km to theSW of the town of El Calafate (Province of Santa Cruz, Argentina) and consists of abeautifully preserved and articulated skull and jaws, and part of the postcranial skeletonthat were preserved encased in a large concretion. This new taxon belongs to thenotosuchian clade Peirosauridae, representing the latest and southernmost recordfor this group of crocodyliforms. The new taxon is recovered as closely related toother robust and broad-snouted peirosaurids that lived by the end of the CretaceousPeriod, such as Colhuehuapisuchus from the Maastrichtian of Central Patagonia andMiadanasuchus oblita from the Maastrichtian of Madagascar. The completeness ofthe new specimen reveals, for the first time, the anatomy and body plan of a largeand broad snouted peirosaurid. The new taxon bears large ziphodont teeth,a broad oreinirostral snout that is only slightly longer than 50% the skull length, anda deep adductor chamber in the temporal region and posterior mandibular ramus.The anterior region of its postcranial skeleton is preserved and shows broad scapulaand a robust humerus features previously known in large predatorial notosuchians.The new crocodyliform adds to the predatorial component of terrestrial ecosystems athigh paleolatitudes by the end of the Cretaceous Period.
Fil: Novas, Fernando Emilio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
Fil: Pol, Diego. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
Fil: Agnolin, Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
Fil: de Souza Carvalho, Ismar. Universidade Federal do Rio de Janeiro; Brasil
Fil: Manabe, Makoto. The University Of Tokyo; Japón
Fil: Tsuihiji, Takanobu. The University Of Tokyo; Japón
Fil: Rozadilla, Sebastian. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
Fil: Lio, Gabriel L.. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
Fil: Isasi, Marcelo Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
Materia
Maastrichtian
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/272521
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/272521
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling A new large hypercarnivorous crocodyliform from the Maastrichtian of Southern Patagonia, ArgentinaNovas, Fernando EmilioPol, DiegoAgnolin, Federicode Souza Carvalho, IsmarManabe, MakotoTsuihiji, TakanobuRozadilla, SebastianLio, Gabriel L.Isasi, Marcelo PabloMaastrichtianhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The first crocodyliform specimen from the Maastrichtian Chorrillo Formation (AustralBasin, Patagonia) is here described. The discovery was made about 30 km to theSW of the town of El Calafate (Province of Santa Cruz, Argentina) and consists of abeautifully preserved and articulated skull and jaws, and part of the postcranial skeletonthat were preserved encased in a large concretion. This new taxon belongs to thenotosuchian clade Peirosauridae, representing the latest and southernmost recordfor this group of crocodyliforms. The new taxon is recovered as closely related toother robust and broad-snouted peirosaurids that lived by the end of the CretaceousPeriod, such as Colhuehuapisuchus from the Maastrichtian of Central Patagonia andMiadanasuchus oblita from the Maastrichtian of Madagascar. The completeness ofthe new specimen reveals, for the first time, the anatomy and body plan of a largeand broad snouted peirosaurid. The new taxon bears large ziphodont teeth,a broad oreinirostral snout that is only slightly longer than 50% the skull length, anda deep adductor chamber in the temporal region and posterior mandibular ramus.The anterior region of its postcranial skeleton is preserved and shows broad scapulaand a robust humerus features previously known in large predatorial notosuchians.The new crocodyliform adds to the predatorial component of terrestrial ecosystems athigh paleolatitudes by the end of the Cretaceous Period.Fil: Novas, Fernando Emilio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; ArgentinaFil: Pol, Diego. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; ArgentinaFil: Agnolin, Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; ArgentinaFil: de Souza Carvalho, Ismar. Universidade Federal do Rio de Janeiro; BrasilFil: Manabe, Makoto. The University Of Tokyo; JapónFil: Tsuihiji, Takanobu. The University Of Tokyo; JapónFil: Rozadilla, Sebastian. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; ArgentinaFil: Lio, Gabriel L.. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; ArgentinaFil: Isasi, Marcelo Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; ArgentinaPublic Library of Science2025-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/272521Novas, Fernando Emilio; Pol, Diego; Agnolin, Federico; de Souza Carvalho, Ismar; Manabe, Makoto; et al.; A new large hypercarnivorous crocodyliform from the Maastrichtian of Southern Patagonia, Argentina; Public Library of Science; Plos One; 20; 8; 8-2025; 1-271932-6203CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://dx.plos.org/10.1371/journal.pone.0328561info:eu-repo/semantics/altIdentifier/doi/10.1371/journal.pone.0328561info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-11-26T08:56:31Zoai:ri.conicet.gov.ar:11336/272521instacron: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:34982025-11-26 08:56:32.06CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv A new large hypercarnivorous crocodyliform from the Maastrichtian of Southern Patagonia, Argentina
title A new large hypercarnivorous crocodyliform from the Maastrichtian of Southern Patagonia, Argentina
spellingShingle A new large hypercarnivorous crocodyliform from the Maastrichtian of Southern Patagonia, Argentina
Novas, Fernando Emilio
Maastrichtian
title_short A new large hypercarnivorous crocodyliform from the Maastrichtian of Southern Patagonia, Argentina
title_full A new large hypercarnivorous crocodyliform from the Maastrichtian of Southern Patagonia, Argentina
title_fullStr A new large hypercarnivorous crocodyliform from the Maastrichtian of Southern Patagonia, Argentina
title_full_unstemmed A new large hypercarnivorous crocodyliform from the Maastrichtian of Southern Patagonia, Argentina
title_sort A new large hypercarnivorous crocodyliform from the Maastrichtian of Southern Patagonia, Argentina
dc.creator.none.fl_str_mv Novas, Fernando Emilio
Pol, Diego
Agnolin, Federico
de Souza Carvalho, Ismar
Manabe, Makoto
Tsuihiji, Takanobu
Rozadilla, Sebastian
Lio, Gabriel L.
Isasi, Marcelo Pablo
author Novas, Fernando Emilio
author_facet Novas, Fernando Emilio
Pol, Diego
Agnolin, Federico
de Souza Carvalho, Ismar
Manabe, Makoto
Tsuihiji, Takanobu
Rozadilla, Sebastian
Lio, Gabriel L.
Isasi, Marcelo Pablo
author_role author
author2 Pol, Diego
Agnolin, Federico
de Souza Carvalho, Ismar
Manabe, Makoto
Tsuihiji, Takanobu
Rozadilla, Sebastian
Lio, Gabriel L.
Isasi, Marcelo Pablo
author2_role author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Maastrichtian
topic Maastrichtian
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The first crocodyliform specimen from the Maastrichtian Chorrillo Formation (AustralBasin, Patagonia) is here described. The discovery was made about 30 km to theSW of the town of El Calafate (Province of Santa Cruz, Argentina) and consists of abeautifully preserved and articulated skull and jaws, and part of the postcranial skeletonthat were preserved encased in a large concretion. This new taxon belongs to thenotosuchian clade Peirosauridae, representing the latest and southernmost recordfor this group of crocodyliforms. The new taxon is recovered as closely related toother robust and broad-snouted peirosaurids that lived by the end of the CretaceousPeriod, such as Colhuehuapisuchus from the Maastrichtian of Central Patagonia andMiadanasuchus oblita from the Maastrichtian of Madagascar. The completeness ofthe new specimen reveals, for the first time, the anatomy and body plan of a largeand broad snouted peirosaurid. The new taxon bears large ziphodont teeth,a broad oreinirostral snout that is only slightly longer than 50% the skull length, anda deep adductor chamber in the temporal region and posterior mandibular ramus.The anterior region of its postcranial skeleton is preserved and shows broad scapulaand a robust humerus features previously known in large predatorial notosuchians.The new crocodyliform adds to the predatorial component of terrestrial ecosystems athigh paleolatitudes by the end of the Cretaceous Period.
Fil: Novas, Fernando Emilio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
Fil: Pol, Diego. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
Fil: Agnolin, Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
Fil: de Souza Carvalho, Ismar. Universidade Federal do Rio de Janeiro; Brasil
Fil: Manabe, Makoto. The University Of Tokyo; Japón
Fil: Tsuihiji, Takanobu. The University Of Tokyo; Japón
Fil: Rozadilla, Sebastian. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
Fil: Lio, Gabriel L.. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
Fil: Isasi, Marcelo Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
description The first crocodyliform specimen from the Maastrichtian Chorrillo Formation (AustralBasin, Patagonia) is here described. The discovery was made about 30 km to theSW of the town of El Calafate (Province of Santa Cruz, Argentina) and consists of abeautifully preserved and articulated skull and jaws, and part of the postcranial skeletonthat were preserved encased in a large concretion. This new taxon belongs to thenotosuchian clade Peirosauridae, representing the latest and southernmost recordfor this group of crocodyliforms. The new taxon is recovered as closely related toother robust and broad-snouted peirosaurids that lived by the end of the CretaceousPeriod, such as Colhuehuapisuchus from the Maastrichtian of Central Patagonia andMiadanasuchus oblita from the Maastrichtian of Madagascar. The completeness ofthe new specimen reveals, for the first time, the anatomy and body plan of a largeand broad snouted peirosaurid. The new taxon bears large ziphodont teeth,a broad oreinirostral snout that is only slightly longer than 50% the skull length, anda deep adductor chamber in the temporal region and posterior mandibular ramus.The anterior region of its postcranial skeleton is preserved and shows broad scapulaand a robust humerus features previously known in large predatorial notosuchians.The new crocodyliform adds to the predatorial component of terrestrial ecosystems athigh paleolatitudes by the end of the Cretaceous Period.
publishDate 2025
dc.date.none.fl_str_mv 2025-08
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/11336/272521
Novas, Fernando Emilio; Pol, Diego; Agnolin, Federico; de Souza Carvalho, Ismar; Manabe, Makoto; et al.; A new large hypercarnivorous crocodyliform from the Maastrichtian of Southern Patagonia, Argentina; Public Library of Science; Plos One; 20; 8; 8-2025; 1-27
1932-6203
CONICET Digital
CONICET
url http://hdl.handle.net/11336/272521
identifier_str_mv Novas, Fernando Emilio; Pol, Diego; Agnolin, Federico; de Souza Carvalho, Ismar; Manabe, Makoto; et al.; A new large hypercarnivorous crocodyliform from the Maastrichtian of Southern Patagonia, Argentina; Public Library of Science; Plos One; 20; 8; 8-2025; 1-27
1932-6203
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://dx.plos.org/10.1371/journal.pone.0328561
info:eu-repo/semantics/altIdentifier/doi/10.1371/journal.pone.0328561
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
dc.publisher.none.fl_str_mv Public Library of Science
publisher.none.fl_str_mv Public Library of Science
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
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
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score 13.011256

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