Decoupling the spread of grasslands from the evolution of grazer-type herbivores in South America

Autores
Strömberg, Caroline A. E.; Dunn, Regan E.; Madden, Richard H.; Kohn, Matthew J.; Carlini, Alfredo Armando
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The evolution of high-crowned cheek teeth (hypsodonty) in herbivorous mammals during the late Cenozoic is classically regarded as an adaptive response to the near-global spread of grass-dominated habitats. Precocious hypsodonty in middle Eocene (B38 million years (Myr) ago) faunas from Patagonia, South America, is therefore thought to signal Earth’s first grasslands, 20 million years earlier than elsewhere. Here, using a high-resolution, 43–18 million-year record of plant silica (phytoliths) from Patagonia, we show that although open-habitat grasses existed in southern South America since the middle Eocene (B40 Myr ago), they were minor floral components in overall forested habitats between 40 and 18 Myr ago. Thus, distinctly different, continent-specific environmental conditions (arid grasslands versus ash-laden forests) triggered convergent cheek–tooth evolution in Cenozoic herbivores. Hypsodonty evolution is an important example where the present is an insufficient key to the past, and contextual information from fossils is vital for understanding processes of adaptation.
Fil: Strömberg, Caroline A. E.. University of Washington; Estados Unidos
Fil: Dunn, Regan E.. University of Washington; Estados Unidos
Fil: Madden, Richard H.. University Of Chicago; Estados Unidos
Fil: Kohn, Matthew J.. Boise State University; Estados Unidos
Fil: Carlini, Alfredo Armando. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Departamento Científico de Paleontología de Vertebrados; Argentina
Materia
Phytolith
GrassLands
Paleogene
South America
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:11336/13581
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Decoupling the spread of grasslands from the evolution of grazer-type herbivores in South AmericaStrömberg, Caroline A. E.Dunn, Regan E.Madden, Richard H.Kohn, Matthew J.Carlini, Alfredo ArmandoPhytolithGrassLandsPaleogeneSouth Americahttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The evolution of high-crowned cheek teeth (hypsodonty) in herbivorous mammals during the late Cenozoic is classically regarded as an adaptive response to the near-global spread of grass-dominated habitats. Precocious hypsodonty in middle Eocene (B38 million years (Myr) ago) faunas from Patagonia, South America, is therefore thought to signal Earth’s first grasslands, 20 million years earlier than elsewhere. Here, using a high-resolution, 43–18 million-year record of plant silica (phytoliths) from Patagonia, we show that although open-habitat grasses existed in southern South America since the middle Eocene (B40 Myr ago), they were minor floral components in overall forested habitats between 40 and 18 Myr ago. Thus, distinctly different, continent-specific environmental conditions (arid grasslands versus ash-laden forests) triggered convergent cheek–tooth evolution in Cenozoic herbivores. Hypsodonty evolution is an important example where the present is an insufficient key to the past, and contextual information from fossils is vital for understanding processes of adaptation.Fil: Strömberg, Caroline A. E.. University of Washington; Estados UnidosFil: Dunn, Regan E.. University of Washington; Estados UnidosFil: Madden, Richard H.. University Of Chicago; Estados UnidosFil: Kohn, Matthew J.. Boise State University; Estados UnidosFil: Carlini, Alfredo Armando. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Departamento Científico de Paleontología de Vertebrados; ArgentinaMacmillan Publishers2013-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/13581Strömberg, Caroline A. E.; Dunn, Regan E.; Madden, Richard H.; Kohn, Matthew J.; Carlini, Alfredo Armando; Decoupling the spread of grasslands from the evolution of grazer-type herbivores in South America; Macmillan Publishers; Nature Communications; 4; 2-2013; 1-8; 14782041-1723enginfo:eu-repo/semantics/altIdentifier/doi/10.1038/ncomms2508info:eu-repo/semantics/altIdentifier/url/http://www.nature.com/articles/ncomms2508info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:01:37Zoai:ri.conicet.gov.ar:11336/13581instacron: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:34982025-10-22 11:01:38.096CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Decoupling the spread of grasslands from the evolution of grazer-type herbivores in South America
title Decoupling the spread of grasslands from the evolution of grazer-type herbivores in South America
spellingShingle Decoupling the spread of grasslands from the evolution of grazer-type herbivores in South America
Strömberg, Caroline A. E.
Phytolith
GrassLands
Paleogene
South America
title_short Decoupling the spread of grasslands from the evolution of grazer-type herbivores in South America
title_full Decoupling the spread of grasslands from the evolution of grazer-type herbivores in South America
title_fullStr Decoupling the spread of grasslands from the evolution of grazer-type herbivores in South America
title_full_unstemmed Decoupling the spread of grasslands from the evolution of grazer-type herbivores in South America
title_sort Decoupling the spread of grasslands from the evolution of grazer-type herbivores in South America
dc.creator.none.fl_str_mv Strömberg, Caroline A. E.
Dunn, Regan E.
Madden, Richard H.
Kohn, Matthew J.
Carlini, Alfredo Armando
author Strömberg, Caroline A. E.
author_facet Strömberg, Caroline A. E.
Dunn, Regan E.
Madden, Richard H.
Kohn, Matthew J.
Carlini, Alfredo Armando
author_role author
author2 Dunn, Regan E.
Madden, Richard H.
Kohn, Matthew J.
Carlini, Alfredo Armando
author2_role author
author
author
author
dc.subject.none.fl_str_mv Phytolith
GrassLands
Paleogene
South America
topic Phytolith
GrassLands
Paleogene
South America
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The evolution of high-crowned cheek teeth (hypsodonty) in herbivorous mammals during the late Cenozoic is classically regarded as an adaptive response to the near-global spread of grass-dominated habitats. Precocious hypsodonty in middle Eocene (B38 million years (Myr) ago) faunas from Patagonia, South America, is therefore thought to signal Earth’s first grasslands, 20 million years earlier than elsewhere. Here, using a high-resolution, 43–18 million-year record of plant silica (phytoliths) from Patagonia, we show that although open-habitat grasses existed in southern South America since the middle Eocene (B40 Myr ago), they were minor floral components in overall forested habitats between 40 and 18 Myr ago. Thus, distinctly different, continent-specific environmental conditions (arid grasslands versus ash-laden forests) triggered convergent cheek–tooth evolution in Cenozoic herbivores. Hypsodonty evolution is an important example where the present is an insufficient key to the past, and contextual information from fossils is vital for understanding processes of adaptation.
Fil: Strömberg, Caroline A. E.. University of Washington; Estados Unidos
Fil: Dunn, Regan E.. University of Washington; Estados Unidos
Fil: Madden, Richard H.. University Of Chicago; Estados Unidos
Fil: Kohn, Matthew J.. Boise State University; Estados Unidos
Fil: Carlini, Alfredo Armando. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Departamento Científico de Paleontología de Vertebrados; Argentina
description The evolution of high-crowned cheek teeth (hypsodonty) in herbivorous mammals during the late Cenozoic is classically regarded as an adaptive response to the near-global spread of grass-dominated habitats. Precocious hypsodonty in middle Eocene (B38 million years (Myr) ago) faunas from Patagonia, South America, is therefore thought to signal Earth’s first grasslands, 20 million years earlier than elsewhere. Here, using a high-resolution, 43–18 million-year record of plant silica (phytoliths) from Patagonia, we show that although open-habitat grasses existed in southern South America since the middle Eocene (B40 Myr ago), they were minor floral components in overall forested habitats between 40 and 18 Myr ago. Thus, distinctly different, continent-specific environmental conditions (arid grasslands versus ash-laden forests) triggered convergent cheek–tooth evolution in Cenozoic herbivores. Hypsodonty evolution is an important example where the present is an insufficient key to the past, and contextual information from fossils is vital for understanding processes of adaptation.
publishDate 2013
dc.date.none.fl_str_mv 2013-02
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/11336/13581
Strömberg, Caroline A. E.; Dunn, Regan E.; Madden, Richard H.; Kohn, Matthew J.; Carlini, Alfredo Armando; Decoupling the spread of grasslands from the evolution of grazer-type herbivores in South America; Macmillan Publishers; Nature Communications; 4; 2-2013; 1-8; 1478
2041-1723
url http://hdl.handle.net/11336/13581
identifier_str_mv Strömberg, Caroline A. E.; Dunn, Regan E.; Madden, Richard H.; Kohn, Matthew J.; Carlini, Alfredo Armando; Decoupling the spread of grasslands from the evolution of grazer-type herbivores in South America; Macmillan Publishers; Nature Communications; 4; 2-2013; 1-8; 1478
2041-1723
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1038/ncomms2508
info:eu-repo/semantics/altIdentifier/url/http://www.nature.com/articles/ncomms2508
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 Macmillan Publishers
publisher.none.fl_str_mv Macmillan Publishers
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 13.229304

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