New Early Eocene mammalian fauna from western Patagonia, Argentina
Two new fossil mammal localities from the Paleogene of central-western Patagonia are preliminarily described as the basis for a new possible biochronological unit for the early Eocene of Patagonia, correlated as being between two conventional SALMAs, the Riochican (older) and the Vacan subage of the...
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Format: | Article in Journal/Newspaper |
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American Museum of Natural History
2009
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Online Access: | https://www.zora.uzh.ch/id/eprint/20519/ https://www.zora.uzh.ch/id/eprint/20519/11/KPIM_CARL-AA_2009-2.pdf http://digitallibrary.amnh.org/dspace/bitstream/2246/5957/1/N3638.pdf https://doi.org/10.5167/uzh-20519 https://doi.org/10.1206/577.1 |
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ftunivzuerich:oai:www.zora.uzh.ch:20519 2024-09-30T14:24:36+00:00 New Early Eocene mammalian fauna from western Patagonia, Argentina Tejedor, M F Goin, F J Gelfo, J N López, G Bond, M Carlini, A A Scillato-Yané, G J Woodburne, M O Chornogubsky, L Aragón, E Reguero, M A Czaplewski, N J Vincon, S Martin, G M Ciancio, M R 2009 application/pdf https://www.zora.uzh.ch/id/eprint/20519/ https://www.zora.uzh.ch/id/eprint/20519/11/KPIM_CARL-AA_2009-2.pdf http://digitallibrary.amnh.org/dspace/bitstream/2246/5957/1/N3638.pdf https://doi.org/10.5167/uzh-20519 https://doi.org/10.1206/577.1 eng eng American Museum of Natural History https://www.zora.uzh.ch/id/eprint/20519/11/KPIM_CARL-AA_2009-2.pdf doi:10.5167/uzh-20519 doi:10.1206/577.1 urn:issn:0003-0082 info:eu-repo/semantics/openAccess Tejedor, M F; Goin, F J; Gelfo, J N; López, G; Bond, M; Carlini, A A; Scillato-Yané, G J; Woodburne, M O; Chornogubsky, L; Aragón, E; Reguero, M A; Czaplewski, N J; Vincon, S; Martin, G M; Ciancio, M R (2009). New Early Eocene mammalian fauna from western Patagonia, Argentina. American Museum Novitates, (3638):1-43. Department of Paleontology 560 Fossils & prehistoric life Journal Article PeerReviewed info:eu-repo/semantics/article 2009 ftunivzuerich https://doi.org/10.5167/uzh-2051910.1206/577.1 2024-09-04T00:39:05Z Two new fossil mammal localities from the Paleogene of central-western Patagonia are preliminarily described as the basis for a new possible biochronological unit for the early Eocene of Patagonia, correlated as being between two conventional SALMAs, the Riochican (older) and the Vacan subage of the Casamayoran SALMA. The mammal-bearing strata belong to the Middle Chubut River Volcanic-Pyroclastic Complex (northwestern Chubut Province, Argentina), of Paleocene-Eocene age. This complex includes a variety of volcaniclastic, intrusive, pyroclastic, and extrusive rocks deposited after the K-T boundary. Geochronological data taken from nearby volcanic deposits that underlie and overlie the mammal-bearing levels indicate that both faunas are of late early Eocene age (Ypresian-Lutetian boundary). In addition to more than 50 species of mammals, including marsupials, ungulates, and xenarthrans, two lower molars are the oldest evidence of bats in South America. Paleobotanical and palynological evidence from inferred contemporary localities nearby indicate subtropical environments characterized by warm and probably moderately humid climate. Remarkably, this new fauna is tentatively correlated with Eocene mammals from the La Meseta Formation in the Antarctic Peninsula. We conclude that the two localities mentioned above are part of a possible new biochronological unit, but the formal proposal of a new SALMA awaits completion of taxonomic analysis of the materials reported upon here. If the La Meseta fauna is correlated biochronologically to western Patagonia, this also suggests a continental extension of the biogeographic Weddelian Province as far north as central-western Patagonia. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula University of Zurich (UZH): ZORA (Zurich Open Repository and Archive Antarctic Antarctic Peninsula Argentina Chubut ENVELOPE(-62.533,-62.533,-76.100,-76.100) Patagonia Salma ENVELOPE(32.133,32.133,65.817,65.817) The Antarctic |
institution |
Open Polar |
collection |
University of Zurich (UZH): ZORA (Zurich Open Repository and Archive |
op_collection_id |
ftunivzuerich |
language |
English |
topic |
Department of Paleontology 560 Fossils & prehistoric life |
spellingShingle |
Department of Paleontology 560 Fossils & prehistoric life Tejedor, M F Goin, F J Gelfo, J N López, G Bond, M Carlini, A A Scillato-Yané, G J Woodburne, M O Chornogubsky, L Aragón, E Reguero, M A Czaplewski, N J Vincon, S Martin, G M Ciancio, M R New Early Eocene mammalian fauna from western Patagonia, Argentina |
topic_facet |
Department of Paleontology 560 Fossils & prehistoric life |
description |
Two new fossil mammal localities from the Paleogene of central-western Patagonia are preliminarily described as the basis for a new possible biochronological unit for the early Eocene of Patagonia, correlated as being between two conventional SALMAs, the Riochican (older) and the Vacan subage of the Casamayoran SALMA. The mammal-bearing strata belong to the Middle Chubut River Volcanic-Pyroclastic Complex (northwestern Chubut Province, Argentina), of Paleocene-Eocene age. This complex includes a variety of volcaniclastic, intrusive, pyroclastic, and extrusive rocks deposited after the K-T boundary. Geochronological data taken from nearby volcanic deposits that underlie and overlie the mammal-bearing levels indicate that both faunas are of late early Eocene age (Ypresian-Lutetian boundary). In addition to more than 50 species of mammals, including marsupials, ungulates, and xenarthrans, two lower molars are the oldest evidence of bats in South America. Paleobotanical and palynological evidence from inferred contemporary localities nearby indicate subtropical environments characterized by warm and probably moderately humid climate. Remarkably, this new fauna is tentatively correlated with Eocene mammals from the La Meseta Formation in the Antarctic Peninsula. We conclude that the two localities mentioned above are part of a possible new biochronological unit, but the formal proposal of a new SALMA awaits completion of taxonomic analysis of the materials reported upon here. If the La Meseta fauna is correlated biochronologically to western Patagonia, this also suggests a continental extension of the biogeographic Weddelian Province as far north as central-western Patagonia. |
format |
Article in Journal/Newspaper |
author |
Tejedor, M F Goin, F J Gelfo, J N López, G Bond, M Carlini, A A Scillato-Yané, G J Woodburne, M O Chornogubsky, L Aragón, E Reguero, M A Czaplewski, N J Vincon, S Martin, G M Ciancio, M R |
author_facet |
Tejedor, M F Goin, F J Gelfo, J N López, G Bond, M Carlini, A A Scillato-Yané, G J Woodburne, M O Chornogubsky, L Aragón, E Reguero, M A Czaplewski, N J Vincon, S Martin, G M Ciancio, M R |
author_sort |
Tejedor, M F |
title |
New Early Eocene mammalian fauna from western Patagonia, Argentina |
title_short |
New Early Eocene mammalian fauna from western Patagonia, Argentina |
title_full |
New Early Eocene mammalian fauna from western Patagonia, Argentina |
title_fullStr |
New Early Eocene mammalian fauna from western Patagonia, Argentina |
title_full_unstemmed |
New Early Eocene mammalian fauna from western Patagonia, Argentina |
title_sort |
new early eocene mammalian fauna from western patagonia, argentina |
publisher |
American Museum of Natural History |
publishDate |
2009 |
url |
https://www.zora.uzh.ch/id/eprint/20519/ https://www.zora.uzh.ch/id/eprint/20519/11/KPIM_CARL-AA_2009-2.pdf http://digitallibrary.amnh.org/dspace/bitstream/2246/5957/1/N3638.pdf https://doi.org/10.5167/uzh-20519 https://doi.org/10.1206/577.1 |
long_lat |
ENVELOPE(-62.533,-62.533,-76.100,-76.100) ENVELOPE(32.133,32.133,65.817,65.817) |
geographic |
Antarctic Antarctic Peninsula Argentina Chubut Patagonia Salma The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula Argentina Chubut Patagonia Salma The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula |
genre_facet |
Antarc* Antarctic Antarctic Peninsula |
op_source |
Tejedor, M F; Goin, F J; Gelfo, J N; López, G; Bond, M; Carlini, A A; Scillato-Yané, G J; Woodburne, M O; Chornogubsky, L; Aragón, E; Reguero, M A; Czaplewski, N J; Vincon, S; Martin, G M; Ciancio, M R (2009). New Early Eocene mammalian fauna from western Patagonia, Argentina. American Museum Novitates, (3638):1-43. |
op_relation |
https://www.zora.uzh.ch/id/eprint/20519/11/KPIM_CARL-AA_2009-2.pdf doi:10.5167/uzh-20519 doi:10.1206/577.1 urn:issn:0003-0082 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5167/uzh-2051910.1206/577.1 |
_version_ |
1811641617955684352 |