Data from: On the existence of non-microbiotherian Australidelphian marsupials (Diprotodontia) in the Eocene of Patagonia
A diverse assemblage of extinct mammals of early–middle Eocene age (Ypresian–Lutetian boundary) come from the Patagonian localities of La Barda and Laguna Fría around Paso del Sapo in northwestern Chubut Province (Argentina). Metatherians are well represented, mostly by dental remains of ‘Didelphimo...
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ftdryad:oai:v1.datadryad.org:10255/dryad.106653 2023-05-15T13:40:12+02:00 Data from: On the existence of non-microbiotherian Australidelphian marsupials (Diprotodontia) in the Eocene of Patagonia Lorente, Malena Chornogubsky, Laura Goin, Francisco J. Argentina Patagonia Chubut Paso del Sapo Paleogene 2016-05-09T12:11:46Z http://hdl.handle.net/10255/dryad.106653 https://doi.org/10.5061/dryad.k3h00 unknown doi:10.5061/dryad.k3h00/1 doi:10.5061/dryad.k3h00/2 doi:10.1111/pala.12241 doi:10.5061/dryad.k3h00 Lorente M, Chornogubsky L, Goin FJ (2016) On the existence of non-microbiotherian Australidelphian marsupials (Diprotodontia) in the Eocene of Patagonia. Palaeontology 59(4): 533–547. http://hdl.handle.net/10255/dryad.106653 Paso del Sapo Fauna tarsal bones Article 2016 ftdryad https://doi.org/10.5061/dryad.k3h00 https://doi.org/10.5061/dryad.k3h00/1 https://doi.org/10.5061/dryad.k3h00/2 https://doi.org/10.1111/pala.12241 2020-01-01T15:29:35Z A diverse assemblage of extinct mammals of early–middle Eocene age (Ypresian–Lutetian boundary) come from the Patagonian localities of La Barda and Laguna Fría around Paso del Sapo in northwestern Chubut Province (Argentina). Metatherians are well represented, mostly by dental remains of ‘Didelphimorphia’, Paucituberculata, Sparassodonta, Microbiotheria, and Polydolopimorphia. Here we analyse three calcanea and one astragalus referable to the same, indeterminate taxon, from La Barda, showing the fusion of their ectal and sustentacular facets. This facet arrangement characterizes the Australidelphia, a marsupial clade represented by Microbiotheria from South America and Antarctica, plus all Australasian lineages. Other australidelphian features shown by these tarsals include: in the calcanea, a reduced peroneal process and a tripartite cuboid facet; in the astragalus, a round, very small astragalar head in relation to the body; a convex trochlea with a half for the tibia and half, in slightly lower position, for the fibula. Their size and other anatomical features suggest that the new tarsals cannot be referred to the Microbiotheria. Phylogenetic analysis suggests that the La Barda taxon lies within the Australidelphia, and that it is either closely related or belongs to, the Diprotodontia. The existence of advanced australidelphians in Patagonia adds further evidence of the close relationship between Patagonia, Antarctica, and Australia during the Late Cretaceous – early Palaeogene. Article in Journal/Newspaper Antarc* Antarctica Dryad Digital Repository (Duke University) Patagonia Argentina Chubut ENVELOPE(-62.533,-62.533,-76.100,-76.100) |
institution |
Open Polar |
collection |
Dryad Digital Repository (Duke University) |
op_collection_id |
ftdryad |
language |
unknown |
topic |
Paso del Sapo Fauna tarsal bones |
spellingShingle |
Paso del Sapo Fauna tarsal bones Lorente, Malena Chornogubsky, Laura Goin, Francisco J. Data from: On the existence of non-microbiotherian Australidelphian marsupials (Diprotodontia) in the Eocene of Patagonia |
topic_facet |
Paso del Sapo Fauna tarsal bones |
description |
A diverse assemblage of extinct mammals of early–middle Eocene age (Ypresian–Lutetian boundary) come from the Patagonian localities of La Barda and Laguna Fría around Paso del Sapo in northwestern Chubut Province (Argentina). Metatherians are well represented, mostly by dental remains of ‘Didelphimorphia’, Paucituberculata, Sparassodonta, Microbiotheria, and Polydolopimorphia. Here we analyse three calcanea and one astragalus referable to the same, indeterminate taxon, from La Barda, showing the fusion of their ectal and sustentacular facets. This facet arrangement characterizes the Australidelphia, a marsupial clade represented by Microbiotheria from South America and Antarctica, plus all Australasian lineages. Other australidelphian features shown by these tarsals include: in the calcanea, a reduced peroneal process and a tripartite cuboid facet; in the astragalus, a round, very small astragalar head in relation to the body; a convex trochlea with a half for the tibia and half, in slightly lower position, for the fibula. Their size and other anatomical features suggest that the new tarsals cannot be referred to the Microbiotheria. Phylogenetic analysis suggests that the La Barda taxon lies within the Australidelphia, and that it is either closely related or belongs to, the Diprotodontia. The existence of advanced australidelphians in Patagonia adds further evidence of the close relationship between Patagonia, Antarctica, and Australia during the Late Cretaceous – early Palaeogene. |
format |
Article in Journal/Newspaper |
author |
Lorente, Malena Chornogubsky, Laura Goin, Francisco J. |
author_facet |
Lorente, Malena Chornogubsky, Laura Goin, Francisco J. |
author_sort |
Lorente, Malena |
title |
Data from: On the existence of non-microbiotherian Australidelphian marsupials (Diprotodontia) in the Eocene of Patagonia |
title_short |
Data from: On the existence of non-microbiotherian Australidelphian marsupials (Diprotodontia) in the Eocene of Patagonia |
title_full |
Data from: On the existence of non-microbiotherian Australidelphian marsupials (Diprotodontia) in the Eocene of Patagonia |
title_fullStr |
Data from: On the existence of non-microbiotherian Australidelphian marsupials (Diprotodontia) in the Eocene of Patagonia |
title_full_unstemmed |
Data from: On the existence of non-microbiotherian Australidelphian marsupials (Diprotodontia) in the Eocene of Patagonia |
title_sort |
data from: on the existence of non-microbiotherian australidelphian marsupials (diprotodontia) in the eocene of patagonia |
publishDate |
2016 |
url |
http://hdl.handle.net/10255/dryad.106653 https://doi.org/10.5061/dryad.k3h00 |
op_coverage |
Argentina Patagonia Chubut Paso del Sapo Paleogene |
long_lat |
ENVELOPE(-62.533,-62.533,-76.100,-76.100) |
geographic |
Patagonia Argentina Chubut |
geographic_facet |
Patagonia Argentina Chubut |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_relation |
doi:10.5061/dryad.k3h00/1 doi:10.5061/dryad.k3h00/2 doi:10.1111/pala.12241 doi:10.5061/dryad.k3h00 Lorente M, Chornogubsky L, Goin FJ (2016) On the existence of non-microbiotherian Australidelphian marsupials (Diprotodontia) in the Eocene of Patagonia. Palaeontology 59(4): 533–547. http://hdl.handle.net/10255/dryad.106653 |
op_doi |
https://doi.org/10.5061/dryad.k3h00 https://doi.org/10.5061/dryad.k3h00/1 https://doi.org/10.5061/dryad.k3h00/2 https://doi.org/10.1111/pala.12241 |
_version_ |
1766130603037556736 |