EOCENE BIRDS FROM THE WESTERN MARGIN OF SOUTHERNMOST SOUTH AMERICA
Artículo de publicación ISI This study presents the first record of Eocene birds from the western margin of southernmost South America. Three localities in Magallanes, southern Chile, have yielded a total of eleven bird remains, including Sphenisciformes (penguins) and one record tentatively assigne...
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ftunivchilecap:oai:www.captura.uchile.cl:2250/13478 2023-05-15T13:43:13+02:00 EOCENE BIRDS FROM THE WESTERN MARGIN OF SOUTHERNMOST SOUTH AMERICA Sallaberry, Michel Yury Yáñez, Roberto E. Otero, Rodrigo A. Soto Acuña, Sergio Torres González, Teresa 2010-05-25 http://www.captura.uchile.cl/handle/2250/13478 en eng PALEONTOLOGICAL SOC INC BAHIA INGLESA FORMATION SEYMOUR ISLAND CHILE ANTARCTICA PENGUINS RECORD BIOGEOGRAPHY DIVERSITY PATAGONIA PLIOCENE Artículo de Revista 2010 ftunivchilecap 2013-12-20T10:26:46Z Artículo de publicación ISI This study presents the first record of Eocene birds from the western margin of southernmost South America. Three localities in Magallanes, southern Chile, have yielded a total of eleven bird remains, including Sphenisciformes (penguins) and one record tentatively assigned to cf. Ardeidae (egrets). Two different groups of penguins have been recognized from these localities. The first group is similar in size to the smallest taxa previously described from Seymour Island, Marambiornis Myrcha et al., 2002, Mesetaornis Myrcha et al., 2002, and Delphinornis Wiman, 1905. The second recognized group is similar in size to the biggest taxa from Seymour Island; based on the available remains, we recognize the genus Palaeeudyptes Huxley, 1859, one of the most widespread penguin genera in the Southern Hemisphere during the Eocene. The stratigraphic context of the localities indicates a certain level of correlation with the geological units described on Seymour Island. The newly studied materials cast more light on the paleobiogeography of the group, extending the known ranges to the South American continent. In addition to the newly discovered birds, the presence of several taxa of elasmobranchs previously recovered exclusively from Eocene beds in the Southern Hemisphere help to clarify the age of the studied localities, widely discussed during the last decades. This paper verifies the presence of extensive Eocene sedimentary successions with fossil vertebrates along the western margin of southern South America, contrary to the previous assumption that such a record is lacking in Chile. Article in Journal/Newspaper Antarc* Antarctica Seymour Island Universidad de Chile: Captura Huxley ENVELOPE(162.867,162.867,-77.850,-77.850) Isi ENVELOPE(-38.550,-38.550,65.617,65.617) Magallanes ENVELOPE(-62.933,-62.933,-64.883,-64.883) Patagonia Seymour ENVELOPE(-56.767,-56.767,-64.283,-64.283) Seymour Island ENVELOPE(-56.750,-56.750,-64.283,-64.283) |
institution |
Open Polar |
collection |
Universidad de Chile: Captura |
op_collection_id |
ftunivchilecap |
language |
English |
topic |
BAHIA INGLESA FORMATION SEYMOUR ISLAND CHILE ANTARCTICA PENGUINS RECORD BIOGEOGRAPHY DIVERSITY PATAGONIA PLIOCENE |
spellingShingle |
BAHIA INGLESA FORMATION SEYMOUR ISLAND CHILE ANTARCTICA PENGUINS RECORD BIOGEOGRAPHY DIVERSITY PATAGONIA PLIOCENE Sallaberry, Michel Yury Yáñez, Roberto E. Otero, Rodrigo A. Soto Acuña, Sergio Torres González, Teresa EOCENE BIRDS FROM THE WESTERN MARGIN OF SOUTHERNMOST SOUTH AMERICA |
topic_facet |
BAHIA INGLESA FORMATION SEYMOUR ISLAND CHILE ANTARCTICA PENGUINS RECORD BIOGEOGRAPHY DIVERSITY PATAGONIA PLIOCENE |
description |
Artículo de publicación ISI This study presents the first record of Eocene birds from the western margin of southernmost South America. Three localities in Magallanes, southern Chile, have yielded a total of eleven bird remains, including Sphenisciformes (penguins) and one record tentatively assigned to cf. Ardeidae (egrets). Two different groups of penguins have been recognized from these localities. The first group is similar in size to the smallest taxa previously described from Seymour Island, Marambiornis Myrcha et al., 2002, Mesetaornis Myrcha et al., 2002, and Delphinornis Wiman, 1905. The second recognized group is similar in size to the biggest taxa from Seymour Island; based on the available remains, we recognize the genus Palaeeudyptes Huxley, 1859, one of the most widespread penguin genera in the Southern Hemisphere during the Eocene. The stratigraphic context of the localities indicates a certain level of correlation with the geological units described on Seymour Island. The newly studied materials cast more light on the paleobiogeography of the group, extending the known ranges to the South American continent. In addition to the newly discovered birds, the presence of several taxa of elasmobranchs previously recovered exclusively from Eocene beds in the Southern Hemisphere help to clarify the age of the studied localities, widely discussed during the last decades. This paper verifies the presence of extensive Eocene sedimentary successions with fossil vertebrates along the western margin of southern South America, contrary to the previous assumption that such a record is lacking in Chile. |
format |
Article in Journal/Newspaper |
author |
Sallaberry, Michel Yury Yáñez, Roberto E. Otero, Rodrigo A. Soto Acuña, Sergio Torres González, Teresa |
author_facet |
Sallaberry, Michel Yury Yáñez, Roberto E. Otero, Rodrigo A. Soto Acuña, Sergio Torres González, Teresa |
author_sort |
Sallaberry, Michel |
title |
EOCENE BIRDS FROM THE WESTERN MARGIN OF SOUTHERNMOST SOUTH AMERICA |
title_short |
EOCENE BIRDS FROM THE WESTERN MARGIN OF SOUTHERNMOST SOUTH AMERICA |
title_full |
EOCENE BIRDS FROM THE WESTERN MARGIN OF SOUTHERNMOST SOUTH AMERICA |
title_fullStr |
EOCENE BIRDS FROM THE WESTERN MARGIN OF SOUTHERNMOST SOUTH AMERICA |
title_full_unstemmed |
EOCENE BIRDS FROM THE WESTERN MARGIN OF SOUTHERNMOST SOUTH AMERICA |
title_sort |
eocene birds from the western margin of southernmost south america |
publisher |
PALEONTOLOGICAL SOC INC |
publishDate |
2010 |
url |
http://www.captura.uchile.cl/handle/2250/13478 |
long_lat |
ENVELOPE(162.867,162.867,-77.850,-77.850) ENVELOPE(-38.550,-38.550,65.617,65.617) ENVELOPE(-62.933,-62.933,-64.883,-64.883) ENVELOPE(-56.767,-56.767,-64.283,-64.283) ENVELOPE(-56.750,-56.750,-64.283,-64.283) |
geographic |
Huxley Isi Magallanes Patagonia Seymour Seymour Island |
geographic_facet |
Huxley Isi Magallanes Patagonia Seymour Seymour Island |
genre |
Antarc* Antarctica Seymour Island |
genre_facet |
Antarc* Antarctica Seymour Island |
_version_ |
1766185980744695808 |