New early eocene mammalian fauna from western Patagonia

Autores
Tejedor, Marcelo Fabian; Goin, Francisco Javier; Gelfo, Javier Nicolás; López, Guillermo Marcos; Bond, Mariano; Carlini, Alfredo Armando; Scillato, Gustavo Juan; Woodburne, Michael O.; Chornogubsky Clerici, Laura; Aragon, Eugenio; Reguero, Marcelo Alfredo; Czaplewski, Nicolas J.; Vincon, Sergio; Martin, Gabriel M.; Ciancio, Martin Ricardo
Año de publicación
2009
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Two new fossil mammal localities from the Paleogene of central-western Patagonia are preliminarily described as the basis for a new possible biochronological unit for the early Eocene of Patagonia, correlated as being between two conventional SALMAs, the Riochican (older) and the Vacan subage of the Casamayoran SALMA. The mammal-bearing strata belong to the Middle Chubut River Volcanic-Pyroclastic Complex (northwestern Chubut Province, Argentina), of Paleocene-Eocene age. This complex includes a variety of volcaniclastic, intrusive, pyroclastic, and extrusive rocks deposited after the K-T boundary. Geochronological data taken from nearby volcanic deposits that underlie and overlie the mammal-bearing levels indicate that both faunas are of late early Eocene age (Ypresian-Lutetian boundary). In addition to more than 50 species of mammals, including marsupials, ungulates, and xenarthrans, two lower molars are the oldest evidence of bats in South America. Paleobotanical and palynological evidence from inferred contemporary localities nearby indicate subtropical environments characterized by warm and probably moderately humid climate. Remarkably, this new fauna is tentatively correlated with Eocene mammals from the La Meseta Formation in the Antarctic Peninsula. We conclude that the two localities mentioned above are part of a possible new biochronological unit, but the formal proposal of a new SALMA awaits completion of taxonomic analysis of the materials reported upon here. If the La Meseta fauna is correlated biochronologically to western Patagonia, this also suggests a continental extension of the biogeographic Weddelian Province as far north as centralwestern Patagonia.
Fil: Tejedor, Marcelo Fabian. Division of Vertebrate Zoology (Mammalogy), American Museum of Natural History; Estados Unidos
Fil: Goin, Francisco Javier. División Paleontología de Vertebrados, Facultad de Ciencias Naturales y Museo de La Plata; Argentina
Fil: Gelfo, Javier Nicolás. División Paleontología de Vertebrados, Facultad de Ciencias Naturales y Museo de La Plata; Argentina
Fil: López, Guillermo Marcos. División Paleontología de Vertebrados, Facultad de Ciencias Naturales y Museo de La Plata; Argentina
Fil: Bond, Mariano. División Paleontología de Vertebrados, Facultad de Ciencias Naturales y Museo de La Plata; Argentina
Fil: Carlini, Alfredo Armando. División Paleontología de Vertebrados, Facultad de Ciencias Naturales y Museo de La Plata; Argentina
Fil: Scillato, Gustavo Juan. División Paleontología de Vertebrados, Facultad de Ciencias Naturales y Museo de La Plata; Argentina
Fil: Woodburne, Michael O.. Department of Geology, Museum of Northern Arizona; Estados Unidos
Fil: Chornogubsky Clerici, Laura. Sección Paleontología de Vertebrados, Museo Argentino de Ciencias Naturales ‘‘Bernardino Rivadavia’; Argentina
Fil: Aragon, Eugenio. Centro de Investigaciones Geológicas, Universidad Nacional de La Plata; Argentina
Fil: Reguero, Marcelo Alfredo. División Paleontología Vertebrados, Facultad de Ciencias Naturales y Museo de La Plata; Argentina
Fil: Czaplewski, Nicolas J.. University of Oklahoma, Oklahoma Museum of Natural History; Estados Unidos
Fil: Vincon, Sergio. LIEB (Laboratorio de Investigaciones en Evolución y Biodiversidad), Facultad de Ciencias Naturales, Sede Esquel, Universidad Nacional de la Patagonia ‘‘San Juan Bosco’’; Argentina
Fil: Martin, Gabriel M.. LIEB (Laboratorio de Investigaciones en Evolución y Biodiversidad), Facultad de Ciencias Naturales, Sede Esquel, Universidad Nacional de la Patagonia ‘‘San Juan Bosco’’; Argentina
Fil: Ciancio, Martin Ricardo. División Paleontología de Vertebrados, Facultad de Ciencias Naturales y Museo de La Plata; Argentina
Materia
Eocene
Patagonia
Mammal
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:11336/101832
Acceder
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network_acronym_str CONICETDig
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network_name_str CONICET Digital (CONICET)
spelling New early eocene mammalian fauna from western PatagoniaTejedor, Marcelo FabianGoin, Francisco JavierGelfo, Javier NicolásLópez, Guillermo MarcosBond, MarianoCarlini, Alfredo ArmandoScillato, Gustavo JuanWoodburne, Michael O.Chornogubsky Clerici, LauraAragon, EugenioReguero, Marcelo AlfredoCzaplewski, Nicolas J.Vincon, SergioMartin, Gabriel M.Ciancio, Martin RicardoEocenePatagoniaMammalhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Two new fossil mammal localities from the Paleogene of central-western Patagonia are preliminarily described as the basis for a new possible biochronological unit for the early Eocene of Patagonia, correlated as being between two conventional SALMAs, the Riochican (older) and the Vacan subage of the Casamayoran SALMA. The mammal-bearing strata belong to the Middle Chubut River Volcanic-Pyroclastic Complex (northwestern Chubut Province, Argentina), of Paleocene-Eocene age. This complex includes a variety of volcaniclastic, intrusive, pyroclastic, and extrusive rocks deposited after the K-T boundary. Geochronological data taken from nearby volcanic deposits that underlie and overlie the mammal-bearing levels indicate that both faunas are of late early Eocene age (Ypresian-Lutetian boundary). In addition to more than 50 species of mammals, including marsupials, ungulates, and xenarthrans, two lower molars are the oldest evidence of bats in South America. Paleobotanical and palynological evidence from inferred contemporary localities nearby indicate subtropical environments characterized by warm and probably moderately humid climate. Remarkably, this new fauna is tentatively correlated with Eocene mammals from the La Meseta Formation in the Antarctic Peninsula. We conclude that the two localities mentioned above are part of a possible new biochronological unit, but the formal proposal of a new SALMA awaits completion of taxonomic analysis of the materials reported upon here. If the La Meseta fauna is correlated biochronologically to western Patagonia, this also suggests a continental extension of the biogeographic Weddelian Province as far north as centralwestern Patagonia.Fil: Tejedor, Marcelo Fabian. Division of Vertebrate Zoology (Mammalogy), American Museum of Natural History; Estados UnidosFil: Goin, Francisco Javier. División Paleontología de Vertebrados, Facultad de Ciencias Naturales y Museo de La Plata; ArgentinaFil: Gelfo, Javier Nicolás. División Paleontología de Vertebrados, Facultad de Ciencias Naturales y Museo de La Plata; ArgentinaFil: López, Guillermo Marcos. División Paleontología de Vertebrados, Facultad de Ciencias Naturales y Museo de La Plata; ArgentinaFil: Bond, Mariano. División Paleontología de Vertebrados, Facultad de Ciencias Naturales y Museo de La Plata; ArgentinaFil: Carlini, Alfredo Armando. División Paleontología de Vertebrados, Facultad de Ciencias Naturales y Museo de La Plata; ArgentinaFil: Scillato, Gustavo Juan. División Paleontología de Vertebrados, Facultad de Ciencias Naturales y Museo de La Plata; ArgentinaFil: Woodburne, Michael O.. Department of Geology, Museum of Northern Arizona; Estados UnidosFil: Chornogubsky Clerici, Laura. Sección Paleontología de Vertebrados, Museo Argentino de Ciencias Naturales ‘‘Bernardino Rivadavia’; ArgentinaFil: Aragon, Eugenio. Centro de Investigaciones Geológicas, Universidad Nacional de La Plata; ArgentinaFil: Reguero, Marcelo Alfredo. División Paleontología Vertebrados, Facultad de Ciencias Naturales y Museo de La Plata; ArgentinaFil: Czaplewski, Nicolas J.. University of Oklahoma, Oklahoma Museum of Natural History; Estados UnidosFil: Vincon, Sergio. LIEB (Laboratorio de Investigaciones en Evolución y Biodiversidad), Facultad de Ciencias Naturales, Sede Esquel, Universidad Nacional de la Patagonia ‘‘San Juan Bosco’’; ArgentinaFil: Martin, Gabriel M.. LIEB (Laboratorio de Investigaciones en Evolución y Biodiversidad), Facultad de Ciencias Naturales, Sede Esquel, Universidad Nacional de la Patagonia ‘‘San Juan Bosco’’; ArgentinaFil: Ciancio, Martin Ricardo. División Paleontología de Vertebrados, Facultad de Ciencias Naturales y Museo de La Plata; ArgentinaAmerican Museum Natural History2009-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/101832Tejedor, Marcelo Fabian; Goin, Francisco Javier; Gelfo, Javier Nicolás; López, Guillermo Marcos; Bond, Mariano; et al.; New early eocene mammalian fauna from western Patagonia; American Museum Natural History; American Museum Novitates; 3638; 3-2009; 1-430003-0082CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://bioone.org/journals/American-Museum-Novitates/volume-2009/issue-3638/577.1/New-Early-Eocene-Mammalian-Fauna-from-Western-Patagonia-Argentina/10.1206/577.1.shortinfo:eu-repo/semantics/altIdentifier/doi//10.1206/577.1info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:10:00Zoai:ri.conicet.gov.ar:11336/101832instacron: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:34982025-09-03 10:10:01.201CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv New early eocene mammalian fauna from western Patagonia
title New early eocene mammalian fauna from western Patagonia
spellingShingle New early eocene mammalian fauna from western Patagonia
Tejedor, Marcelo Fabian
Eocene
Patagonia
Mammal
title_short New early eocene mammalian fauna from western Patagonia
title_full New early eocene mammalian fauna from western Patagonia
title_fullStr New early eocene mammalian fauna from western Patagonia
title_full_unstemmed New early eocene mammalian fauna from western Patagonia
title_sort New early eocene mammalian fauna from western Patagonia
dc.creator.none.fl_str_mv Tejedor, Marcelo Fabian
Goin, Francisco Javier
Gelfo, Javier Nicolás
López, Guillermo Marcos
Bond, Mariano
Carlini, Alfredo Armando
Scillato, Gustavo Juan
Woodburne, Michael O.
Chornogubsky Clerici, Laura
Aragon, Eugenio
Reguero, Marcelo Alfredo
Czaplewski, Nicolas J.
Vincon, Sergio
Martin, Gabriel M.
Ciancio, Martin Ricardo
author Tejedor, Marcelo Fabian
author_facet Tejedor, Marcelo Fabian
Goin, Francisco Javier
Gelfo, Javier Nicolás
López, Guillermo Marcos
Bond, Mariano
Carlini, Alfredo Armando
Scillato, Gustavo Juan
Woodburne, Michael O.
Chornogubsky Clerici, Laura
Aragon, Eugenio
Reguero, Marcelo Alfredo
Czaplewski, Nicolas J.
Vincon, Sergio
Martin, Gabriel M.
Ciancio, Martin Ricardo
author_role author
author2 Goin, Francisco Javier
Gelfo, Javier Nicolás
López, Guillermo Marcos
Bond, Mariano
Carlini, Alfredo Armando
Scillato, Gustavo Juan
Woodburne, Michael O.
Chornogubsky Clerici, Laura
Aragon, Eugenio
Reguero, Marcelo Alfredo
Czaplewski, Nicolas J.
Vincon, Sergio
Martin, Gabriel M.
Ciancio, Martin Ricardo
author2_role author
author
author
author
author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Eocene
Patagonia
Mammal
topic Eocene
Patagonia
Mammal
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Two new fossil mammal localities from the Paleogene of central-western Patagonia are preliminarily described as the basis for a new possible biochronological unit for the early Eocene of Patagonia, correlated as being between two conventional SALMAs, the Riochican (older) and the Vacan subage of the Casamayoran SALMA. The mammal-bearing strata belong to the Middle Chubut River Volcanic-Pyroclastic Complex (northwestern Chubut Province, Argentina), of Paleocene-Eocene age. This complex includes a variety of volcaniclastic, intrusive, pyroclastic, and extrusive rocks deposited after the K-T boundary. Geochronological data taken from nearby volcanic deposits that underlie and overlie the mammal-bearing levels indicate that both faunas are of late early Eocene age (Ypresian-Lutetian boundary). In addition to more than 50 species of mammals, including marsupials, ungulates, and xenarthrans, two lower molars are the oldest evidence of bats in South America. Paleobotanical and palynological evidence from inferred contemporary localities nearby indicate subtropical environments characterized by warm and probably moderately humid climate. Remarkably, this new fauna is tentatively correlated with Eocene mammals from the La Meseta Formation in the Antarctic Peninsula. We conclude that the two localities mentioned above are part of a possible new biochronological unit, but the formal proposal of a new SALMA awaits completion of taxonomic analysis of the materials reported upon here. If the La Meseta fauna is correlated biochronologically to western Patagonia, this also suggests a continental extension of the biogeographic Weddelian Province as far north as centralwestern Patagonia.
Fil: Tejedor, Marcelo Fabian. Division of Vertebrate Zoology (Mammalogy), American Museum of Natural History; Estados Unidos
Fil: Goin, Francisco Javier. División Paleontología de Vertebrados, Facultad de Ciencias Naturales y Museo de La Plata; Argentina
Fil: Gelfo, Javier Nicolás. División Paleontología de Vertebrados, Facultad de Ciencias Naturales y Museo de La Plata; Argentina
Fil: López, Guillermo Marcos. División Paleontología de Vertebrados, Facultad de Ciencias Naturales y Museo de La Plata; Argentina
Fil: Bond, Mariano. División Paleontología de Vertebrados, Facultad de Ciencias Naturales y Museo de La Plata; Argentina
Fil: Carlini, Alfredo Armando. División Paleontología de Vertebrados, Facultad de Ciencias Naturales y Museo de La Plata; Argentina
Fil: Scillato, Gustavo Juan. División Paleontología de Vertebrados, Facultad de Ciencias Naturales y Museo de La Plata; Argentina
Fil: Woodburne, Michael O.. Department of Geology, Museum of Northern Arizona; Estados Unidos
Fil: Chornogubsky Clerici, Laura. Sección Paleontología de Vertebrados, Museo Argentino de Ciencias Naturales ‘‘Bernardino Rivadavia’; Argentina
Fil: Aragon, Eugenio. Centro de Investigaciones Geológicas, Universidad Nacional de La Plata; Argentina
Fil: Reguero, Marcelo Alfredo. División Paleontología Vertebrados, Facultad de Ciencias Naturales y Museo de La Plata; Argentina
Fil: Czaplewski, Nicolas J.. University of Oklahoma, Oklahoma Museum of Natural History; Estados Unidos
Fil: Vincon, Sergio. LIEB (Laboratorio de Investigaciones en Evolución y Biodiversidad), Facultad de Ciencias Naturales, Sede Esquel, Universidad Nacional de la Patagonia ‘‘San Juan Bosco’’; Argentina
Fil: Martin, Gabriel M.. LIEB (Laboratorio de Investigaciones en Evolución y Biodiversidad), Facultad de Ciencias Naturales, Sede Esquel, Universidad Nacional de la Patagonia ‘‘San Juan Bosco’’; Argentina
Fil: Ciancio, Martin Ricardo. División Paleontología de Vertebrados, Facultad de Ciencias Naturales y Museo de La Plata; Argentina
description Two new fossil mammal localities from the Paleogene of central-western Patagonia are preliminarily described as the basis for a new possible biochronological unit for the early Eocene of Patagonia, correlated as being between two conventional SALMAs, the Riochican (older) and the Vacan subage of the Casamayoran SALMA. The mammal-bearing strata belong to the Middle Chubut River Volcanic-Pyroclastic Complex (northwestern Chubut Province, Argentina), of Paleocene-Eocene age. This complex includes a variety of volcaniclastic, intrusive, pyroclastic, and extrusive rocks deposited after the K-T boundary. Geochronological data taken from nearby volcanic deposits that underlie and overlie the mammal-bearing levels indicate that both faunas are of late early Eocene age (Ypresian-Lutetian boundary). In addition to more than 50 species of mammals, including marsupials, ungulates, and xenarthrans, two lower molars are the oldest evidence of bats in South America. Paleobotanical and palynological evidence from inferred contemporary localities nearby indicate subtropical environments characterized by warm and probably moderately humid climate. Remarkably, this new fauna is tentatively correlated with Eocene mammals from the La Meseta Formation in the Antarctic Peninsula. We conclude that the two localities mentioned above are part of a possible new biochronological unit, but the formal proposal of a new SALMA awaits completion of taxonomic analysis of the materials reported upon here. If the La Meseta fauna is correlated biochronologically to western Patagonia, this also suggests a continental extension of the biogeographic Weddelian Province as far north as centralwestern Patagonia.
publishDate 2009
dc.date.none.fl_str_mv 2009-03
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
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info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/101832
Tejedor, Marcelo Fabian; Goin, Francisco Javier; Gelfo, Javier Nicolás; López, Guillermo Marcos; Bond, Mariano; et al.; New early eocene mammalian fauna from western Patagonia; American Museum Natural History; American Museum Novitates; 3638; 3-2009; 1-43
0003-0082
CONICET Digital
CONICET
url http://hdl.handle.net/11336/101832
identifier_str_mv Tejedor, Marcelo Fabian; Goin, Francisco Javier; Gelfo, Javier Nicolás; López, Guillermo Marcos; Bond, Mariano; et al.; New early eocene mammalian fauna from western Patagonia; American Museum Natural History; American Museum Novitates; 3638; 3-2009; 1-43
0003-0082
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
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info:eu-repo/semantics/altIdentifier/doi//10.1206/577.1
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dc.publisher.none.fl_str_mv American Museum Natural History
publisher.none.fl_str_mv American Museum Natural History
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repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
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