The record of the typothere Pachyrukhos (Mammalia, Notoungulata) and the Chinchillid Prolagostomus (Mammalia, Rodentia) in the Santa Cruz Formation (early–middle Miocene) south to the Río Coyle, Patagonia, Argentina

The continental early–middle Miocene Santa Cruz Formation (SCF) from Patagonia is one of the most important stratigraphic units of southern South America in terms of the terrestrial Neogene record. Its fossil content was pivotal for establishing the succession of Cenozoic faunas from Patagonia and f...

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Autores principales: Vizcaíno, Sergio Fabián, Bargo, María Susana, Kay, Richard, Raigemborn, María Sol
Formato: Articulo
Lenguaje:Inglés
Publicado: 2021
Materias:
Paleontología
Typotheria
Caviomorpha
Burdigalian–Langhian
Santacrucian
Patagonia
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/130025
https://www.peapaleontologica.org.ar/index.php/peapa/article/view/385
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-130025
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Paleontología
Typotheria
Caviomorpha
Burdigalian–Langhian
Santacrucian
Patagonia
spellingShingle Paleontología
Typotheria
Caviomorpha
Burdigalian–Langhian
Santacrucian
Patagonia
Vizcaíno, Sergio Fabián
Bargo, María Susana
Kay, Richard
Raigemborn, María Sol
The record of the typothere Pachyrukhos (Mammalia, Notoungulata) and the Chinchillid Prolagostomus (Mammalia, Rodentia) in the Santa Cruz Formation (early–middle Miocene) south to the Río Coyle, Patagonia, Argentina
topic_facet Paleontología
Typotheria
Caviomorpha
Burdigalian–Langhian
Santacrucian
Patagonia
description The continental early–middle Miocene Santa Cruz Formation (SCF) from Patagonia is one of the most important stratigraphic units of southern South America in terms of the terrestrial Neogene record. Its fossil content was pivotal for establishing the succession of Cenozoic faunas from Patagonia and formed the basis of the Santacrucian South American Land Mammal Age. Despite the updated knowledge recently achieved, the stratigraphic distribution of many taxa within the SCF remains to be clarified. That is the case with the typothere notoungulate Pachyrukhos and the chinchillid rodent Prolagostomus. New information on the stratigraphy of the SCF along the north bank of the Río Gallegos and Cabo Buen Tiempo (Santa Cruz Province), together with a detailed analysis of the provenance information of the specimens in the principal old museum collections, sheds light on the record of these taxa south to Río Coyle. Our results show that the first recorded occurrence of both taxa in the area was between ~17 Ma and 17.41 Ma, restricted to the upper part of the SCF, including the upper part of the Estancia La Costa Member at Cañadón Las Totoras-Monte Tigre, and the superimposed Estancia La Angelina Member along the Río Gallegos and Cabo Buen Tiempo. Their presence suggests a trend to aridification in the upper part of the SCF south to the Río Coyle. These results are consistent with recent information obtained from other locations of the SCF north to the Río Coyle.
format Articulo
Articulo
author Vizcaíno, Sergio Fabián
Bargo, María Susana
Kay, Richard
Raigemborn, María Sol
author_facet Vizcaíno, Sergio Fabián
Bargo, María Susana
Kay, Richard
Raigemborn, María Sol
author_sort Vizcaíno, Sergio Fabián
title The record of the typothere Pachyrukhos (Mammalia, Notoungulata) and the Chinchillid Prolagostomus (Mammalia, Rodentia) in the Santa Cruz Formation (early–middle Miocene) south to the Río Coyle, Patagonia, Argentina
title_short The record of the typothere Pachyrukhos (Mammalia, Notoungulata) and the Chinchillid Prolagostomus (Mammalia, Rodentia) in the Santa Cruz Formation (early–middle Miocene) south to the Río Coyle, Patagonia, Argentina
title_full The record of the typothere Pachyrukhos (Mammalia, Notoungulata) and the Chinchillid Prolagostomus (Mammalia, Rodentia) in the Santa Cruz Formation (early–middle Miocene) south to the Río Coyle, Patagonia, Argentina
title_fullStr The record of the typothere Pachyrukhos (Mammalia, Notoungulata) and the Chinchillid Prolagostomus (Mammalia, Rodentia) in the Santa Cruz Formation (early–middle Miocene) south to the Río Coyle, Patagonia, Argentina
title_full_unstemmed The record of the typothere Pachyrukhos (Mammalia, Notoungulata) and the Chinchillid Prolagostomus (Mammalia, Rodentia) in the Santa Cruz Formation (early–middle Miocene) south to the Río Coyle, Patagonia, Argentina
title_sort record of the typothere pachyrukhos (mammalia, notoungulata) and the chinchillid prolagostomus (mammalia, rodentia) in the santa cruz formation (early–middle miocene) south to the río coyle, patagonia, argentina
publishDate 2021
url http://sedici.unlp.edu.ar/handle/10915/130025
https://www.peapaleontologica.org.ar/index.php/peapa/article/view/385
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