A new fossil Phyllotine (Rodentia, Sigmodontinae) from late Pliocene in the Andes of northern Argentina

Autores
Ortiz, Pablo Edmundo; Jayat, Jorge Pablo; Steppan, Scott J.
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Pardinamys humahuaquensis, a new genus and species of Phyllotini (Rodentia, Cricetidae), is described on the basis of 111 cranial, mandibular, and dental remains belonging to at least 29 individuals. The fossils were recovered from a microvertebrate assemblage found in late Pliocene deposits (between 3 and 2.5 Ma ago) from the Uqu´ıa Formation, central Jujuy Province, northwestern Argentina. †Pardinamys is morphologically intermediate between the extant genera Eligmodontia and Calomys and can be differentiated from these taxa by the combination of several traits, including short masseteric crest, with upper and lower ramus similarly developed; coronoid process well developed; anteromedian flexus in M1 only present in very young individuals, without any trace of anteromedian style; M1 and M2 with developed second minor fold; large M2 and M3; and metaflexus, paracone, and metacone of M3 well developed. The morphologic characteristics of the new genus and the other sigmodontines found in the Uquian assemblage (at least three extinct genera) suggest an important radiation before the establishment of the modern communities in the central Andean region and indicate the need for a reevaluation of the divergence-age estimates for the group. The recovered taxa indicate the presence of open environments during depositional times, within arid or semiarid conditions, unlike previous reconstructions for this geologic unit. The finding reveals the need for improving the fossil record of sigmodontines in the central Andean region and its importance to understanding the radiation of this group in a more inclusive South American context.
Fil: Ortiz, Pablo Edmundo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Tucumán. Instituto Superior de Correlación Geológica; Argentina. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo; Argentina
Fil: Jayat, Jorge Pablo. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo. Laboratorio de Investigaciones Ecológicas de las Yungas; Argentina. Universidad Nacional de Chilecito. Instituto de Ambientes de Montaña y Regiones Aridas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Steppan, Scott J.. Florida State University; Estados Unidos
Materia
Cricetidae
Humahuaca
Uquía Formation
New Genus
New Species
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:11336/10594
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/10594
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling A new fossil Phyllotine (Rodentia, Sigmodontinae) from late Pliocene in the Andes of northern ArgentinaOrtiz, Pablo EdmundoJayat, Jorge PabloSteppan, Scott J.CricetidaeHumahuacaUquía FormationNew GenusNew Specieshttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Pardinamys humahuaquensis, a new genus and species of Phyllotini (Rodentia, Cricetidae), is described on the basis of 111 cranial, mandibular, and dental remains belonging to at least 29 individuals. The fossils were recovered from a microvertebrate assemblage found in late Pliocene deposits (between 3 and 2.5 Ma ago) from the Uqu´ıa Formation, central Jujuy Province, northwestern Argentina. †Pardinamys is morphologically intermediate between the extant genera Eligmodontia and Calomys and can be differentiated from these taxa by the combination of several traits, including short masseteric crest, with upper and lower ramus similarly developed; coronoid process well developed; anteromedian flexus in M1 only present in very young individuals, without any trace of anteromedian style; M1 and M2 with developed second minor fold; large M2 and M3; and metaflexus, paracone, and metacone of M3 well developed. The morphologic characteristics of the new genus and the other sigmodontines found in the Uquian assemblage (at least three extinct genera) suggest an important radiation before the establishment of the modern communities in the central Andean region and indicate the need for a reevaluation of the divergence-age estimates for the group. The recovered taxa indicate the presence of open environments during depositional times, within arid or semiarid conditions, unlike previous reconstructions for this geologic unit. The finding reveals the need for improving the fossil record of sigmodontines in the central Andean region and its importance to understanding the radiation of this group in a more inclusive South American context.Fil: Ortiz, Pablo Edmundo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Tucumán. Instituto Superior de Correlación Geológica; Argentina. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo; ArgentinaFil: Jayat, Jorge Pablo. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo. Laboratorio de Investigaciones Ecológicas de las Yungas; Argentina. Universidad Nacional de Chilecito. Instituto de Ambientes de Montaña y Regiones Aridas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Steppan, Scott J.. Florida State University; Estados UnidosSociety Of Vertebrate Paleontology2012-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/10594Ortiz, Pablo Edmundo; Jayat, Jorge Pablo; Steppan, Scott J.; A new fossil Phyllotine (Rodentia, Sigmodontinae) from late Pliocene in the Andes of northern Argentina; Society Of Vertebrate Paleontology; Journal of Vertebrate Paleontology; 32; 6; 11-2012; 1429-14410272-46341937-2809enginfo:eu-repo/semantics/altIdentifier/url/http://www.tandfonline.com/doi/abs/10.1080/02724634.2012.707998info:eu-repo/semantics/altIdentifier/doi/10.1080/02724634.2012.707998info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:34:46Zoai:ri.conicet.gov.ar:11336/10594instacron: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 09:34:47.051CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv A new fossil Phyllotine (Rodentia, Sigmodontinae) from late Pliocene in the Andes of northern Argentina
title A new fossil Phyllotine (Rodentia, Sigmodontinae) from late Pliocene in the Andes of northern Argentina
spellingShingle A new fossil Phyllotine (Rodentia, Sigmodontinae) from late Pliocene in the Andes of northern Argentina
Ortiz, Pablo Edmundo
Cricetidae
Humahuaca
Uquía Formation
New Genus
New Species
title_short A new fossil Phyllotine (Rodentia, Sigmodontinae) from late Pliocene in the Andes of northern Argentina
title_full A new fossil Phyllotine (Rodentia, Sigmodontinae) from late Pliocene in the Andes of northern Argentina
title_fullStr A new fossil Phyllotine (Rodentia, Sigmodontinae) from late Pliocene in the Andes of northern Argentina
title_full_unstemmed A new fossil Phyllotine (Rodentia, Sigmodontinae) from late Pliocene in the Andes of northern Argentina
title_sort A new fossil Phyllotine (Rodentia, Sigmodontinae) from late Pliocene in the Andes of northern Argentina
dc.creator.none.fl_str_mv Ortiz, Pablo Edmundo
Jayat, Jorge Pablo
Steppan, Scott J.
author Ortiz, Pablo Edmundo
author_facet Ortiz, Pablo Edmundo
Jayat, Jorge Pablo
Steppan, Scott J.
author_role author
author2 Jayat, Jorge Pablo
Steppan, Scott J.
author2_role author
author
dc.subject.none.fl_str_mv Cricetidae
Humahuaca
Uquía Formation
New Genus
New Species
topic Cricetidae
Humahuaca
Uquía Formation
New Genus
New Species
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Pardinamys humahuaquensis, a new genus and species of Phyllotini (Rodentia, Cricetidae), is described on the basis of 111 cranial, mandibular, and dental remains belonging to at least 29 individuals. The fossils were recovered from a microvertebrate assemblage found in late Pliocene deposits (between 3 and 2.5 Ma ago) from the Uqu´ıa Formation, central Jujuy Province, northwestern Argentina. †Pardinamys is morphologically intermediate between the extant genera Eligmodontia and Calomys and can be differentiated from these taxa by the combination of several traits, including short masseteric crest, with upper and lower ramus similarly developed; coronoid process well developed; anteromedian flexus in M1 only present in very young individuals, without any trace of anteromedian style; M1 and M2 with developed second minor fold; large M2 and M3; and metaflexus, paracone, and metacone of M3 well developed. The morphologic characteristics of the new genus and the other sigmodontines found in the Uquian assemblage (at least three extinct genera) suggest an important radiation before the establishment of the modern communities in the central Andean region and indicate the need for a reevaluation of the divergence-age estimates for the group. The recovered taxa indicate the presence of open environments during depositional times, within arid or semiarid conditions, unlike previous reconstructions for this geologic unit. The finding reveals the need for improving the fossil record of sigmodontines in the central Andean region and its importance to understanding the radiation of this group in a more inclusive South American context.
Fil: Ortiz, Pablo Edmundo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Tucumán. Instituto Superior de Correlación Geológica; Argentina. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo; Argentina
Fil: Jayat, Jorge Pablo. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo. Laboratorio de Investigaciones Ecológicas de las Yungas; Argentina. Universidad Nacional de Chilecito. Instituto de Ambientes de Montaña y Regiones Aridas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Steppan, Scott J.. Florida State University; Estados Unidos
description Pardinamys humahuaquensis, a new genus and species of Phyllotini (Rodentia, Cricetidae), is described on the basis of 111 cranial, mandibular, and dental remains belonging to at least 29 individuals. The fossils were recovered from a microvertebrate assemblage found in late Pliocene deposits (between 3 and 2.5 Ma ago) from the Uqu´ıa Formation, central Jujuy Province, northwestern Argentina. †Pardinamys is morphologically intermediate between the extant genera Eligmodontia and Calomys and can be differentiated from these taxa by the combination of several traits, including short masseteric crest, with upper and lower ramus similarly developed; coronoid process well developed; anteromedian flexus in M1 only present in very young individuals, without any trace of anteromedian style; M1 and M2 with developed second minor fold; large M2 and M3; and metaflexus, paracone, and metacone of M3 well developed. The morphologic characteristics of the new genus and the other sigmodontines found in the Uquian assemblage (at least three extinct genera) suggest an important radiation before the establishment of the modern communities in the central Andean region and indicate the need for a reevaluation of the divergence-age estimates for the group. The recovered taxa indicate the presence of open environments during depositional times, within arid or semiarid conditions, unlike previous reconstructions for this geologic unit. The finding reveals the need for improving the fossil record of sigmodontines in the central Andean region and its importance to understanding the radiation of this group in a more inclusive South American context.
publishDate 2012
dc.date.none.fl_str_mv 2012-11
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/11336/10594
Ortiz, Pablo Edmundo; Jayat, Jorge Pablo; Steppan, Scott J.; A new fossil Phyllotine (Rodentia, Sigmodontinae) from late Pliocene in the Andes of northern Argentina; Society Of Vertebrate Paleontology; Journal of Vertebrate Paleontology; 32; 6; 11-2012; 1429-1441
0272-4634
1937-2809
url http://hdl.handle.net/11336/10594
identifier_str_mv Ortiz, Pablo Edmundo; Jayat, Jorge Pablo; Steppan, Scott J.; A new fossil Phyllotine (Rodentia, Sigmodontinae) from late Pliocene in the Andes of northern Argentina; Society Of Vertebrate Paleontology; Journal of Vertebrate Paleontology; 32; 6; 11-2012; 1429-1441
0272-4634
1937-2809
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.tandfonline.com/doi/abs/10.1080/02724634.2012.707998
info:eu-repo/semantics/altIdentifier/doi/10.1080/02724634.2012.707998
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
dc.publisher.none.fl_str_mv Society Of Vertebrate Paleontology
publisher.none.fl_str_mv Society Of Vertebrate Paleontology
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 13.070432

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