Análisis tafonomico de los macromamíferos del Mioceno superior de Caleufú (La Pampa, Argentina)

The taphonomic results on the fossil macromammal assemblage from Caleufú (La Pampa Province, Argentina) are presented. The fossiliferous level corresponds to the Cerro Azul Formation, Late Miocene in age. Among the different outcrops of this formation, Caleufú presents the greatest concentration of...

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Detalles Bibliográficos
Autores: Montalvo, C. I., Cerdeño, Esperanza, Alcalá, Luis
Tipo de recurso: artículo
Fecha de publicación:2005
País:España
Institución:Universidad de Huelva (UHU)
Repositorio:Arias Montano. Repositorio Institucional de la Universidad de Huelva
Idioma:español
OAI Identifier:oai:ariasmontano.uhu.es:10272/8688
Acceso en línea:http://hdl.handle.net/10272/8688
Access Level:acceso abierto
Palabra clave:Taphonomy
Macromammals
Upper Miocene
La Pampa
Argentina
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spelling Análisis tafonomico de los macromamíferos del Mioceno superior de Caleufú (La Pampa, Argentina)Taphonomic analysis of the Upper Miocene macromammals of Caleufú (La Pampa, Argentina)Montalvo, C. I.Cerdeño, EsperanzaAlcalá, LuisTaphonomyMacromammalsUpper MioceneLa PampaArgentinaThe taphonomic results on the fossil macromammal assemblage from Caleufú (La Pampa Province, Argentina) are presented. The fossiliferous level corresponds to the Cerro Azul Formation, Late Miocene in age. Among the different outcrops of this formation, Caleufú presents the greatest concentration of fossils, with a density of 4,1 remains/m2. Most fossils were recovered on surface over an area of 1590 m2. Identifyed remains (3200) include reptiles, undetermined birds, and many mammals. Macromammals are represented by a minimal number of individuals of 26 and at least 17 taxa, showing a high diversity, detaching that 11 of these taxa are Xenarthra. Most mammal remains are very fragmented and broken, and just 13 basipodial elements are complete. Only two hemimandibles, a maxillary fragment and a few isolated teeth are well preserved. Indeterminable studied fragments (638) are relatively small sized, and cubic morphologies predominate. Most specimens show a high degree of weathering. The observed taphonomic attributes can be explained by a long exposition to environmental factors before the burial process. However, some bones show lichen corrosion, which would indicate moments of reexposition. Abrasion is scarcely present and only on some mineralized bones with sediment infilling. The taphonomic analysis concludes that specimens resulted from accumulation of skeletal elements from different animals that died in the area during a long period of time, corresponding to the time of developing soil. Diversity would be the result of condensation of remains coming from succesive autochtonous comunitiesSociedad Geológica de España20052005-01-0120052005-01-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10272/8688reponame:Arias Montano. Repositorio Institucional de la Universidad de Huelvainstname:Universidad de Huelva (UHU)Españolspaopen accesshttp://purl.org/coar/access_right/c_abf2Atribución-NoComercial-SinDerivadas 3.0 Españahttp://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccessoai:ariasmontano.uhu.es:10272/86882026-06-02T14:58:11Z
dc.title.none.fl_str_mv Análisis tafonomico de los macromamíferos del Mioceno superior de Caleufú (La Pampa, Argentina)
Taphonomic analysis of the Upper Miocene macromammals of Caleufú (La Pampa, Argentina)
title Análisis tafonomico de los macromamíferos del Mioceno superior de Caleufú (La Pampa, Argentina)
spellingShingle Análisis tafonomico de los macromamíferos del Mioceno superior de Caleufú (La Pampa, Argentina)
Montalvo, C. I.
Taphonomy
Macromammals
Upper Miocene
La Pampa
Argentina
title_short Análisis tafonomico de los macromamíferos del Mioceno superior de Caleufú (La Pampa, Argentina)
title_full Análisis tafonomico de los macromamíferos del Mioceno superior de Caleufú (La Pampa, Argentina)
title_fullStr Análisis tafonomico de los macromamíferos del Mioceno superior de Caleufú (La Pampa, Argentina)
title_full_unstemmed Análisis tafonomico de los macromamíferos del Mioceno superior de Caleufú (La Pampa, Argentina)
title_sort Análisis tafonomico de los macromamíferos del Mioceno superior de Caleufú (La Pampa, Argentina)
dc.creator.none.fl_str_mv Montalvo, C. I.
Cerdeño, Esperanza
Alcalá, Luis
author Montalvo, C. I.
author_facet Montalvo, C. I.
Cerdeño, Esperanza
Alcalá, Luis
author_role author
author2 Cerdeño, Esperanza
Alcalá, Luis
author2_role author
author
dc.contributor.none.fl_str_mv
dc.subject.none.fl_str_mv Taphonomy
Macromammals
Upper Miocene
La Pampa
Argentina
topic Taphonomy
Macromammals
Upper Miocene
La Pampa
Argentina
description The taphonomic results on the fossil macromammal assemblage from Caleufú (La Pampa Province, Argentina) are presented. The fossiliferous level corresponds to the Cerro Azul Formation, Late Miocene in age. Among the different outcrops of this formation, Caleufú presents the greatest concentration of fossils, with a density of 4,1 remains/m2. Most fossils were recovered on surface over an area of 1590 m2. Identifyed remains (3200) include reptiles, undetermined birds, and many mammals. Macromammals are represented by a minimal number of individuals of 26 and at least 17 taxa, showing a high diversity, detaching that 11 of these taxa are Xenarthra. Most mammal remains are very fragmented and broken, and just 13 basipodial elements are complete. Only two hemimandibles, a maxillary fragment and a few isolated teeth are well preserved. Indeterminable studied fragments (638) are relatively small sized, and cubic morphologies predominate. Most specimens show a high degree of weathering. The observed taphonomic attributes can be explained by a long exposition to environmental factors before the burial process. However, some bones show lichen corrosion, which would indicate moments of reexposition. Abrasion is scarcely present and only on some mineralized bones with sediment infilling. The taphonomic analysis concludes that specimens resulted from accumulation of skeletal elements from different animals that died in the area during a long period of time, corresponding to the time of developing soil. Diversity would be the result of condensation of remains coming from succesive autochtonous comunities
publishDate 2005
dc.date.none.fl_str_mv 2005
2005-01-01
2005
2005-01-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10272/8688
url http://hdl.handle.net/10272/8688
dc.language.none.fl_str_mv Español
spa
language_invalid_str_mv Español
language spa
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Atribución-NoComercial-SinDerivadas 3.0 España
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Atribución-NoComercial-SinDerivadas 3.0 España
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Sociedad Geológica de España
publisher.none.fl_str_mv Sociedad Geológica de España
dc.source.none.fl_str_mv reponame:Arias Montano. Repositorio Institucional de la Universidad de Huelva
instname:Universidad de Huelva (UHU)
instname_str Universidad de Huelva (UHU)
reponame_str Arias Montano. Repositorio Institucional de la Universidad de Huelva
collection Arias Montano. Repositorio Institucional de la Universidad de Huelva
repository.name.fl_str_mv
repository.mail.fl_str_mv
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