Systematic and biostratigraphic significance of a chinchillid rodent from the Pliocene of eastern Argentina

Autores
Rasia, Luciano Luis; Candela, Adriana M.
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Two species of chinchillid rodents, Lagostomus (Lagostomopsis) incisus and “Lagostomus (Lagostomopsis) spicatus”, have been recorded from the Monte Hermoso Formation (Montehermosan–Lower Chapadmalalan, Early Pliocene) of southern Buenos Aires Province, eastern Argentina. L. (L.) incisus is based on skull remains,while “L. (L.) spicatus” is based on mandible remains and fragmentary skulls. Detailed study of specimens recovered from the upper section of the Monte Hermoso Formation, from the Irene “Formation”, and the Chapadmalal Formation (late Early–early Late Pliocene, Buenos Aires Province), some of them represented by associated skull and mandible remains, indicates that L. (L.) incisus and “L. (L.) spicatus” are synonymous, with the valid name being L. (L.) incisus. The differences between both nominal species are here attributed to different ontogenetic states and sexual dimorphism. The stratigraphic provenance of the fossil material of L. (L.) incisus indicates a temporal distribution of this species restricted to the Montehermosan?–Chapadmalalan (Early–early Late Pliocene), instead of the Montehermosan (Early Pliocene).
Facultad de Ciencias Naturales y Museo
Materia
Ciencias Naturales
Caviomorpha; Chinchillidae; systematics; biostratigraphy
Argentina
Mamíferos
Plioceno
Roedores
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-nd/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/54370
Acceder
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network_name_str SEDICI (UNLP)
spelling Systematic and biostratigraphic significance of a chinchillid rodent from the Pliocene of eastern ArgentinaRasia, Luciano LuisCandela, Adriana M.Ciencias NaturalesCaviomorpha; Chinchillidae; systematics; biostratigraphyArgentinaMamíferosPliocenoRoedoresTwo species of chinchillid rodents, Lagostomus (Lagostomopsis) incisus and “Lagostomus (Lagostomopsis) spicatus”, have been recorded from the Monte Hermoso Formation (Montehermosan–Lower Chapadmalalan, Early Pliocene) of southern Buenos Aires Province, eastern Argentina. L. (L.) incisus is based on skull remains,while “L. (L.) spicatus” is based on mandible remains and fragmentary skulls. Detailed study of specimens recovered from the upper section of the Monte Hermoso Formation, from the Irene “Formation”, and the Chapadmalal Formation (late Early–early Late Pliocene, Buenos Aires Province), some of them represented by associated skull and mandible remains, indicates that L. (L.) incisus and “L. (L.) spicatus” are synonymous, with the valid name being L. (L.) incisus. The differences between both nominal species are here attributed to different ontogenetic states and sexual dimorphism. The stratigraphic provenance of the fossil material of L. (L.) incisus indicates a temporal distribution of this species restricted to the Montehermosan?–Chapadmalalan (Early–early Late Pliocene), instead of the Montehermosan (Early Pliocene).Facultad de Ciencias Naturales y Museo2013-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf241-254http://sedici.unlp.edu.ar/handle/10915/54370enginfo:eu-repo/semantics/altIdentifier/url/https://www.app.pan.pl/article/item/app20110041.htmlinfo:eu-repo/semantics/altIdentifier/issn/1732-2421info:eu-repo/semantics/altIdentifier/doi/10.4202/app.2011.0041info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/4.0/Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-03T10:37:57Zoai:sedici.unlp.edu.ar:10915/54370Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-03 10:37:57.298SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Systematic and biostratigraphic significance of a chinchillid rodent from the Pliocene of eastern Argentina
title Systematic and biostratigraphic significance of a chinchillid rodent from the Pliocene of eastern Argentina
spellingShingle Systematic and biostratigraphic significance of a chinchillid rodent from the Pliocene of eastern Argentina
Rasia, Luciano Luis
Ciencias Naturales
Caviomorpha; Chinchillidae; systematics; biostratigraphy
Argentina
Mamíferos
Plioceno
Roedores
title_short Systematic and biostratigraphic significance of a chinchillid rodent from the Pliocene of eastern Argentina
title_full Systematic and biostratigraphic significance of a chinchillid rodent from the Pliocene of eastern Argentina
title_fullStr Systematic and biostratigraphic significance of a chinchillid rodent from the Pliocene of eastern Argentina
title_full_unstemmed Systematic and biostratigraphic significance of a chinchillid rodent from the Pliocene of eastern Argentina
title_sort Systematic and biostratigraphic significance of a chinchillid rodent from the Pliocene of eastern Argentina
dc.creator.none.fl_str_mv Rasia, Luciano Luis
Candela, Adriana M.
author Rasia, Luciano Luis
author_facet Rasia, Luciano Luis
Candela, Adriana M.
author_role author
author2 Candela, Adriana M.
author2_role author
dc.subject.none.fl_str_mv Ciencias Naturales
Caviomorpha; Chinchillidae; systematics; biostratigraphy
Argentina
Mamíferos
Plioceno
Roedores
topic Ciencias Naturales
Caviomorpha; Chinchillidae; systematics; biostratigraphy
Argentina
Mamíferos
Plioceno
Roedores
dc.description.none.fl_txt_mv Two species of chinchillid rodents, Lagostomus (Lagostomopsis) incisus and “Lagostomus (Lagostomopsis) spicatus”, have been recorded from the Monte Hermoso Formation (Montehermosan–Lower Chapadmalalan, Early Pliocene) of southern Buenos Aires Province, eastern Argentina. L. (L.) incisus is based on skull remains,while “L. (L.) spicatus” is based on mandible remains and fragmentary skulls. Detailed study of specimens recovered from the upper section of the Monte Hermoso Formation, from the Irene “Formation”, and the Chapadmalal Formation (late Early–early Late Pliocene, Buenos Aires Province), some of them represented by associated skull and mandible remains, indicates that L. (L.) incisus and “L. (L.) spicatus” are synonymous, with the valid name being L. (L.) incisus. The differences between both nominal species are here attributed to different ontogenetic states and sexual dimorphism. The stratigraphic provenance of the fossil material of L. (L.) incisus indicates a temporal distribution of this species restricted to the Montehermosan?–Chapadmalalan (Early–early Late Pliocene), instead of the Montehermosan (Early Pliocene).
Facultad de Ciencias Naturales y Museo
description Two species of chinchillid rodents, Lagostomus (Lagostomopsis) incisus and “Lagostomus (Lagostomopsis) spicatus”, have been recorded from the Monte Hermoso Formation (Montehermosan–Lower Chapadmalalan, Early Pliocene) of southern Buenos Aires Province, eastern Argentina. L. (L.) incisus is based on skull remains,while “L. (L.) spicatus” is based on mandible remains and fragmentary skulls. Detailed study of specimens recovered from the upper section of the Monte Hermoso Formation, from the Irene “Formation”, and the Chapadmalal Formation (late Early–early Late Pliocene, Buenos Aires Province), some of them represented by associated skull and mandible remains, indicates that L. (L.) incisus and “L. (L.) spicatus” are synonymous, with the valid name being L. (L.) incisus. The differences between both nominal species are here attributed to different ontogenetic states and sexual dimorphism. The stratigraphic provenance of the fossil material of L. (L.) incisus indicates a temporal distribution of this species restricted to the Montehermosan?–Chapadmalalan (Early–early Late Pliocene), instead of the Montehermosan (Early Pliocene).
publishDate 2013
dc.date.none.fl_str_mv 2013-04
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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info:ar-repo/semantics/articulo
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status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/54370
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dc.language.none.fl_str_mv eng
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info:eu-repo/semantics/altIdentifier/issn/1732-2421
info:eu-repo/semantics/altIdentifier/doi/10.4202/app.2011.0041
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
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Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-nd/4.0/
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
dc.format.none.fl_str_mv application/pdf
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repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
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