Did the megafauna range to 4300 BP in South America?

A date of 4300 ± 90 BP for extinct megafauna in Argentina is discussed. The fossil remains come from the Guerrero Member (area) of the Luján Formation near the city of Luján, Buenos Aires Province. The age of the top of the Guerrero Member is constrained by more than 60 radiocarbon dates obtained fr...

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Autores principales: Cione, Alberto Luis, Figini, Aníbal Juan, Tonni, Eduardo Pedro
Formato: Articulo
Lenguaje:Inglés
Publicado: 2001
Materias:
Ciencias Naturales
Carbono 14
Datación por radiocarbono
megafauna
Argentina
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/83533
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-83533
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Naturales
Carbono 14
Datación por radiocarbono
megafauna
Argentina
spellingShingle Ciencias Naturales
Carbono 14
Datación por radiocarbono
megafauna
Argentina
Cione, Alberto Luis
Figini, Aníbal Juan
Tonni, Eduardo Pedro
Did the megafauna range to 4300 BP in South America?
topic_facet Ciencias Naturales
Carbono 14
Datación por radiocarbono
megafauna
Argentina
description A date of 4300 ± 90 BP for extinct megafauna in Argentina is discussed. The fossil remains come from the Guerrero Member (area) of the Luján Formation near the city of Luján, Buenos Aires Province. The age of the top of the Guerrero Member is constrained by more than 60 radiocarbon dates obtained from the overlying Río Salado Member of Luján Formation, Las Escobas Formation, and Puesto Callejón Viejo Soil, most of them older than 4300 BP. In view of its low collagen content, the <SUP>14</SUP>C measurement of bone sample from Luján should not be accepted uncritically. Because of the poor bone preservation and the possible introduction of "young" contaminants that were not completely eliminated, the <SUP>14</SUP>C date of 4300 ± 90 BP is not reliable. Both biostratigraphic and <SUP>14</SUP>C dating evidence indicates that the date of 4300 BP for the last representative of extinct megafauna in South America is unsupported.
format Articulo
Articulo
author Cione, Alberto Luis
Figini, Aníbal Juan
Tonni, Eduardo Pedro
author_facet Cione, Alberto Luis
Figini, Aníbal Juan
Tonni, Eduardo Pedro
author_sort Cione, Alberto Luis
title Did the megafauna range to 4300 BP in South America?
title_short Did the megafauna range to 4300 BP in South America?
title_full Did the megafauna range to 4300 BP in South America?
title_fullStr Did the megafauna range to 4300 BP in South America?
title_full_unstemmed Did the megafauna range to 4300 BP in South America?
title_sort did the megafauna range to 4300 bp in south america?
publishDate 2001
url http://sedici.unlp.edu.ar/handle/10915/83533
work_keys_str_mv AT cionealbertoluis didthemegafaunarangeto4300bpinsouthamerica
AT figinianibaljuan didthemegafaunarangeto4300bpinsouthamerica
AT tonnieduardopedro didthemegafaunarangeto4300bpinsouthamerica
bdutipo_str Repositorios
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