First record of a Late Holocene fauna associated with an ephemeral fluvial sequence in La Pampa Province, Argentina. Taphonomy and paleoenvironment

The first Late Holocene mammal assemblage (mainly micromammals) of La Pampa Province was found in Quehué paleontological site, associated with an ephemeral fluvial sequence. Taphonomical features of the collected materials were evaluated in order to increase the knowledge of the ancient vertebrate c...

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Autores principales: Montalvo, C.I., Fernández, F.J., Bargo, M.S., Tomassini, R.L., Mehl, A.
Formato: JOUR
Materias:
Holocene
Mammals
Pampean region
South America
Stratigraphy
Taphonomy
Mammalia
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_08959811_v76_n_p225_Montalvo
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_08959811_v76_n_p225_Montalvo
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spelling todo:paper_08959811_v76_n_p225_Montalvo2023-10-03T15:43:28Z First record of a Late Holocene fauna associated with an ephemeral fluvial sequence in La Pampa Province, Argentina. Taphonomy and paleoenvironment Montalvo, C.I. Fernández, F.J. Bargo, M.S. Tomassini, R.L. Mehl, A. Holocene Mammals Pampean region South America Stratigraphy Taphonomy Mammalia The first Late Holocene mammal assemblage (mainly micromammals) of La Pampa Province was found in Quehué paleontological site, associated with an ephemeral fluvial sequence. Taphonomical features of the collected materials were evaluated in order to increase the knowledge of the ancient vertebrate communities of this area and to interpret the origin of the assemblages. Field data and taphonomic analysis of the specimens, suggested the recognition of three assemblages with different taphonomic histories: 1) large to medium sized mammals; 2) micromammals found inside burrows or associated with them; and 3) discrete accumulations of micromammals and other microvertebrates (amphibians, reptiles and birds). Additionally, the paleoenvironmental analysis based mainly on the record of small mammals reflected the predominance of semi-arid conditions associated with a mosaic of open shrub steppe, grasslands and xerophytic forests of Espinal, similar to the present one in the Quehué valley area. However, the presence of Lestodelphys halli in the Quehué site during the Late Holocene (∼1.2 ky BP), suggests a more heterogeneous environment and perhaps relative colder and drier than current times, which are featured by more mesic conditions and anthropic activities, mainly agriculture and livestock during the last centuries. © 2017 Elsevier Ltd JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_08959811_v76_n_p225_Montalvo
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Holocene
Mammals
Pampean region
South America
Stratigraphy
Taphonomy
Mammalia
spellingShingle Holocene
Mammals
Pampean region
South America
Stratigraphy
Taphonomy
Mammalia
Montalvo, C.I.
Fernández, F.J.
Bargo, M.S.
Tomassini, R.L.
Mehl, A.
First record of a Late Holocene fauna associated with an ephemeral fluvial sequence in La Pampa Province, Argentina. Taphonomy and paleoenvironment
topic_facet Holocene
Mammals
Pampean region
South America
Stratigraphy
Taphonomy
Mammalia
description The first Late Holocene mammal assemblage (mainly micromammals) of La Pampa Province was found in Quehué paleontological site, associated with an ephemeral fluvial sequence. Taphonomical features of the collected materials were evaluated in order to increase the knowledge of the ancient vertebrate communities of this area and to interpret the origin of the assemblages. Field data and taphonomic analysis of the specimens, suggested the recognition of three assemblages with different taphonomic histories: 1) large to medium sized mammals; 2) micromammals found inside burrows or associated with them; and 3) discrete accumulations of micromammals and other microvertebrates (amphibians, reptiles and birds). Additionally, the paleoenvironmental analysis based mainly on the record of small mammals reflected the predominance of semi-arid conditions associated with a mosaic of open shrub steppe, grasslands and xerophytic forests of Espinal, similar to the present one in the Quehué valley area. However, the presence of Lestodelphys halli in the Quehué site during the Late Holocene (∼1.2 ky BP), suggests a more heterogeneous environment and perhaps relative colder and drier than current times, which are featured by more mesic conditions and anthropic activities, mainly agriculture and livestock during the last centuries. © 2017 Elsevier Ltd
format JOUR
author Montalvo, C.I.
Fernández, F.J.
Bargo, M.S.
Tomassini, R.L.
Mehl, A.
author_facet Montalvo, C.I.
Fernández, F.J.
Bargo, M.S.
Tomassini, R.L.
Mehl, A.
author_sort Montalvo, C.I.
title First record of a Late Holocene fauna associated with an ephemeral fluvial sequence in La Pampa Province, Argentina. Taphonomy and paleoenvironment
title_short First record of a Late Holocene fauna associated with an ephemeral fluvial sequence in La Pampa Province, Argentina. Taphonomy and paleoenvironment
title_full First record of a Late Holocene fauna associated with an ephemeral fluvial sequence in La Pampa Province, Argentina. Taphonomy and paleoenvironment
title_fullStr First record of a Late Holocene fauna associated with an ephemeral fluvial sequence in La Pampa Province, Argentina. Taphonomy and paleoenvironment
title_full_unstemmed First record of a Late Holocene fauna associated with an ephemeral fluvial sequence in La Pampa Province, Argentina. Taphonomy and paleoenvironment
title_sort first record of a late holocene fauna associated with an ephemeral fluvial sequence in la pampa province, argentina. taphonomy and paleoenvironment
url http://hdl.handle.net/20.500.12110/paper_08959811_v76_n_p225_Montalvo
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