Paleogene equatorial penguins challenge the proposed relationship between biogeography, diversity, and Cenozoic climate change

Autores
Clarke, Julia A.; Sepka, Daniel K.; Stucchi, Marcelo; Urbina, Mario; Giannini, Norberto Pedro; Bertelli, Sara Beatriz; Narváez, Yanina; Boyd, Clint A.
Año de publicación
2007
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
New penguin fossils from the Eocene of Peru force a reevaluation of previous hypotheses regarding the causal role of climate change in penguin evolution. Repeatedly it has been proposed that penguins originated in high southern latitudes and arrived at equatorial regions relatively recently (e.g., 4–8 million years ago), well after the onset of latest Eocene/Oligocene global cooling and increases in polar ice volume. By contrast,newdiscoveries from the middle and late Eocene of Peru reveal that penguins invaded low latitudes >30 million years earlier than prior data suggested, during one of the warmest intervals of the Cenozoic. A diverse fauna includes two new species, here reported from two of the best exemplars of Paleogene penguins yet recovered. The most comprehensive phylogenetic analysis of Sphenisciformes to date, combining morphological and molecular data, places the new species outside the extant penguin radiation (crown clade: Spheniscidae) and supports two separate dispersals to equatorial (paleolatitude 14°S) regions during greenhouse earth conditions. One new species, Perudyptes devriesi, is among the deepest divergences within Sphenisciformes. The second, Icadyptes salasi, is the most complete giant (>1.5 m standing height) penguin yet described. Both species provide critical information on early penguin cranial osteology, trends in penguin body size, and the evolution of the penguin flipper.
Fil: Clarke, Julia A.. North Carolina State University; Estados Unidos
Fil: Sepka, Daniel K.. American Museum of Natural History; Estados Unidos
Fil: Stucchi, Marcelo. Universidad Nacional Mayor de San Marcos; Perú
Fil: Urbina, Mario. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo. Programa de Investigación de Biodiversidad Argentina; Argentina
Fil: Giannini, Norberto Pedro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - Tucumán. Unidad Ejecutora Lillo; Argentina
Fil: Bertelli, Sara Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - Tucumán. Unidad Ejecutora Lillo; Argentina
Fil: Narváez, Yanina. Natural History Museum of Los Angeles County; Estados Unidos
Fil: Boyd, Clint A.. North Carolina State University; Estados Unidos
Materia
Sphenisciformes
Paleontology
Climate Change
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/83181
Acceder
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network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Paleogene equatorial penguins challenge the proposed relationship between biogeography, diversity, and Cenozoic climate changeClarke, Julia A.Sepka, Daniel K.Stucchi, MarceloUrbina, MarioGiannini, Norberto PedroBertelli, Sara BeatrizNarváez, YaninaBoyd, Clint A.SphenisciformesPaleontologyClimate Changehttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1New penguin fossils from the Eocene of Peru force a reevaluation of previous hypotheses regarding the causal role of climate change in penguin evolution. Repeatedly it has been proposed that penguins originated in high southern latitudes and arrived at equatorial regions relatively recently (e.g., 4–8 million years ago), well after the onset of latest Eocene/Oligocene global cooling and increases in polar ice volume. By contrast,newdiscoveries from the middle and late Eocene of Peru reveal that penguins invaded low latitudes >30 million years earlier than prior data suggested, during one of the warmest intervals of the Cenozoic. A diverse fauna includes two new species, here reported from two of the best exemplars of Paleogene penguins yet recovered. The most comprehensive phylogenetic analysis of Sphenisciformes to date, combining morphological and molecular data, places the new species outside the extant penguin radiation (crown clade: Spheniscidae) and supports two separate dispersals to equatorial (paleolatitude 14°S) regions during greenhouse earth conditions. One new species, Perudyptes devriesi, is among the deepest divergences within Sphenisciformes. The second, Icadyptes salasi, is the most complete giant (>1.5 m standing height) penguin yet described. Both species provide critical information on early penguin cranial osteology, trends in penguin body size, and the evolution of the penguin flipper.Fil: Clarke, Julia A.. North Carolina State University; Estados UnidosFil: Sepka, Daniel K.. American Museum of Natural History; Estados UnidosFil: Stucchi, Marcelo. Universidad Nacional Mayor de San Marcos; PerúFil: Urbina, Mario. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo. Programa de Investigación de Biodiversidad Argentina; ArgentinaFil: Giannini, Norberto Pedro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - Tucumán. Unidad Ejecutora Lillo; ArgentinaFil: Bertelli, Sara Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - Tucumán. Unidad Ejecutora Lillo; ArgentinaFil: Narváez, Yanina. Natural History Museum of Los Angeles County; Estados UnidosFil: Boyd, Clint A.. North Carolina State University; Estados UnidosNational Academy of Sciences2007-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/83181Clarke, Julia A.; Sepka, Daniel K.; Stucchi, Marcelo; Urbina, Mario; Giannini, Norberto Pedro; et al.; Paleogene equatorial penguins challenge the proposed relationship between biogeography, diversity, and Cenozoic climate change; National Academy of Sciences; Proceedings of the National Academy of Sciences of The United States of America; 104; 28; 12-2007; 11545-115500027-8424CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.pnas.org/content/104/28/11545info:eu-repo/semantics/altIdentifier/doi/10.1073/pnas.0611099104info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:50:20Zoai:ri.conicet.gov.ar:11336/83181instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 09:50:20.935CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Paleogene equatorial penguins challenge the proposed relationship between biogeography, diversity, and Cenozoic climate change
title Paleogene equatorial penguins challenge the proposed relationship between biogeography, diversity, and Cenozoic climate change
spellingShingle Paleogene equatorial penguins challenge the proposed relationship between biogeography, diversity, and Cenozoic climate change
Clarke, Julia A.
Sphenisciformes
Paleontology
Climate Change
title_short Paleogene equatorial penguins challenge the proposed relationship between biogeography, diversity, and Cenozoic climate change
title_full Paleogene equatorial penguins challenge the proposed relationship between biogeography, diversity, and Cenozoic climate change
title_fullStr Paleogene equatorial penguins challenge the proposed relationship between biogeography, diversity, and Cenozoic climate change
title_full_unstemmed Paleogene equatorial penguins challenge the proposed relationship between biogeography, diversity, and Cenozoic climate change
title_sort Paleogene equatorial penguins challenge the proposed relationship between biogeography, diversity, and Cenozoic climate change
dc.creator.none.fl_str_mv Clarke, Julia A.
Sepka, Daniel K.
Stucchi, Marcelo
Urbina, Mario
Giannini, Norberto Pedro
Bertelli, Sara Beatriz
Narváez, Yanina
Boyd, Clint A.
author Clarke, Julia A.
author_facet Clarke, Julia A.
Sepka, Daniel K.
Stucchi, Marcelo
Urbina, Mario
Giannini, Norberto Pedro
Bertelli, Sara Beatriz
Narváez, Yanina
Boyd, Clint A.
author_role author
author2 Sepka, Daniel K.
Stucchi, Marcelo
Urbina, Mario
Giannini, Norberto Pedro
Bertelli, Sara Beatriz
Narváez, Yanina
Boyd, Clint A.
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Sphenisciformes
Paleontology
Climate Change
topic Sphenisciformes
Paleontology
Climate Change
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv New penguin fossils from the Eocene of Peru force a reevaluation of previous hypotheses regarding the causal role of climate change in penguin evolution. Repeatedly it has been proposed that penguins originated in high southern latitudes and arrived at equatorial regions relatively recently (e.g., 4–8 million years ago), well after the onset of latest Eocene/Oligocene global cooling and increases in polar ice volume. By contrast,newdiscoveries from the middle and late Eocene of Peru reveal that penguins invaded low latitudes >30 million years earlier than prior data suggested, during one of the warmest intervals of the Cenozoic. A diverse fauna includes two new species, here reported from two of the best exemplars of Paleogene penguins yet recovered. The most comprehensive phylogenetic analysis of Sphenisciformes to date, combining morphological and molecular data, places the new species outside the extant penguin radiation (crown clade: Spheniscidae) and supports two separate dispersals to equatorial (paleolatitude 14°S) regions during greenhouse earth conditions. One new species, Perudyptes devriesi, is among the deepest divergences within Sphenisciformes. The second, Icadyptes salasi, is the most complete giant (>1.5 m standing height) penguin yet described. Both species provide critical information on early penguin cranial osteology, trends in penguin body size, and the evolution of the penguin flipper.
Fil: Clarke, Julia A.. North Carolina State University; Estados Unidos
Fil: Sepka, Daniel K.. American Museum of Natural History; Estados Unidos
Fil: Stucchi, Marcelo. Universidad Nacional Mayor de San Marcos; Perú
Fil: Urbina, Mario. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo. Programa de Investigación de Biodiversidad Argentina; Argentina
Fil: Giannini, Norberto Pedro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - Tucumán. Unidad Ejecutora Lillo; Argentina
Fil: Bertelli, Sara Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - Tucumán. Unidad Ejecutora Lillo; Argentina
Fil: Narváez, Yanina. Natural History Museum of Los Angeles County; Estados Unidos
Fil: Boyd, Clint A.. North Carolina State University; Estados Unidos
description New penguin fossils from the Eocene of Peru force a reevaluation of previous hypotheses regarding the causal role of climate change in penguin evolution. Repeatedly it has been proposed that penguins originated in high southern latitudes and arrived at equatorial regions relatively recently (e.g., 4–8 million years ago), well after the onset of latest Eocene/Oligocene global cooling and increases in polar ice volume. By contrast,newdiscoveries from the middle and late Eocene of Peru reveal that penguins invaded low latitudes >30 million years earlier than prior data suggested, during one of the warmest intervals of the Cenozoic. A diverse fauna includes two new species, here reported from two of the best exemplars of Paleogene penguins yet recovered. The most comprehensive phylogenetic analysis of Sphenisciformes to date, combining morphological and molecular data, places the new species outside the extant penguin radiation (crown clade: Spheniscidae) and supports two separate dispersals to equatorial (paleolatitude 14°S) regions during greenhouse earth conditions. One new species, Perudyptes devriesi, is among the deepest divergences within Sphenisciformes. The second, Icadyptes salasi, is the most complete giant (>1.5 m standing height) penguin yet described. Both species provide critical information on early penguin cranial osteology, trends in penguin body size, and the evolution of the penguin flipper.
publishDate 2007
dc.date.none.fl_str_mv 2007-12
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/83181
Clarke, Julia A.; Sepka, Daniel K.; Stucchi, Marcelo; Urbina, Mario; Giannini, Norberto Pedro; et al.; Paleogene equatorial penguins challenge the proposed relationship between biogeography, diversity, and Cenozoic climate change; National Academy of Sciences; Proceedings of the National Academy of Sciences of The United States of America; 104; 28; 12-2007; 11545-11550
0027-8424
CONICET Digital
CONICET
url http://hdl.handle.net/11336/83181
identifier_str_mv Clarke, Julia A.; Sepka, Daniel K.; Stucchi, Marcelo; Urbina, Mario; Giannini, Norberto Pedro; et al.; Paleogene equatorial penguins challenge the proposed relationship between biogeography, diversity, and Cenozoic climate change; National Academy of Sciences; Proceedings of the National Academy of Sciences of The United States of America; 104; 28; 12-2007; 11545-11550
0027-8424
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.pnas.org/content/104/28/11545
info:eu-repo/semantics/altIdentifier/doi/10.1073/pnas.0611099104
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv National Academy of Sciences
publisher.none.fl_str_mv National Academy of Sciences
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.13397

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