Crocodylian diversity peak and extinction in the late Cenozoic of the northern Neotropics

Autores
Scheyer, T. M.; Aguilera, Oscar Alberto; Delfino, M.; Fortier, D. C.; Carlini, Alfredo Armando; Sánchez, R.; Carrillo Briceño, J. D.; Quiroz, L.; Sánchez Villagra, M. R.
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Northern South America and South East Asia are today’s hotspots of crocodylian diversity with up to six (mainly alligatorid) and four (mainly crocodylid) living species respectively, of which usually no more than two or three occur sympatrically. In contrast, during the late Miocene, 14 species existed in South America. Here we show a diversity peak in sympatric occurrence of at least seven species, based on detailed stratigraphic sequence sampling and correlation, involving four geological formations from the middle Miocene to the Pliocene, and on the discovery of two new species and a new occurrence. This degree of crocodylian sympatry is unique in the world and shows that at least several members of Alligatoroidea and Gavialoidea coexisted. By the Pliocene, all these species became extinct, and their extinction was probably related to hydrographic changes linked to the Andean uplift. The extant fauna is first recorded with the oldest Crocodylus species from South America.
Facultad de Ciencias Naturales y Museo
Materia
Paleontología
Crocodylia
Norther southamerica
Diversity
Late cenozoic
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/101970

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spelling Crocodylian diversity peak and extinction in the late Cenozoic of the northern NeotropicsScheyer, T. M.Aguilera, Oscar AlbertoDelfino, M.Fortier, D. C.Carlini, Alfredo ArmandoSánchez, R.Carrillo Briceño, J. D.Quiroz, L.Sánchez Villagra, M. R.PaleontologíaCrocodyliaNorther southamericaDiversityLate cenozoicNorthern South America and South East Asia are today’s hotspots of crocodylian diversity with up to six (mainly alligatorid) and four (mainly crocodylid) living species respectively, of which usually no more than two or three occur sympatrically. In contrast, during the late Miocene, 14 species existed in South America. Here we show a diversity peak in sympatric occurrence of at least seven species, based on detailed stratigraphic sequence sampling and correlation, involving four geological formations from the middle Miocene to the Pliocene, and on the discovery of two new species and a new occurrence. This degree of crocodylian sympatry is unique in the world and shows that at least several members of Alligatoroidea and Gavialoidea coexisted. By the Pliocene, all these species became extinct, and their extinction was probably related to hydrographic changes linked to the Andean uplift. The extant fauna is first recorded with the oldest Crocodylus species from South America.Facultad de Ciencias Naturales y Museo2013-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/101970enginfo:eu-repo/semantics/altIdentifier/url/https://ri.conicet.gov.ar/11336/13639info:eu-repo/semantics/altIdentifier/url/http://www.nature.com/articles/ncomms2940info:eu-repo/semantics/altIdentifier/issn/2041-1723info:eu-repo/semantics/altIdentifier/doi/10.1038/ncomms2940info:eu-repo/semantics/altIdentifier/hdl/11336/13639info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:19:51Zoai:sedici.unlp.edu.ar:10915/101970Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:19:52.287SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Crocodylian diversity peak and extinction in the late Cenozoic of the northern Neotropics
title Crocodylian diversity peak and extinction in the late Cenozoic of the northern Neotropics
spellingShingle Crocodylian diversity peak and extinction in the late Cenozoic of the northern Neotropics
Scheyer, T. M.
Paleontología
Crocodylia
Norther southamerica
Diversity
Late cenozoic
title_short Crocodylian diversity peak and extinction in the late Cenozoic of the northern Neotropics
title_full Crocodylian diversity peak and extinction in the late Cenozoic of the northern Neotropics
title_fullStr Crocodylian diversity peak and extinction in the late Cenozoic of the northern Neotropics
title_full_unstemmed Crocodylian diversity peak and extinction in the late Cenozoic of the northern Neotropics
title_sort Crocodylian diversity peak and extinction in the late Cenozoic of the northern Neotropics
dc.creator.none.fl_str_mv Scheyer, T. M.
Aguilera, Oscar Alberto
Delfino, M.
Fortier, D. C.
Carlini, Alfredo Armando
Sánchez, R.
Carrillo Briceño, J. D.
Quiroz, L.
Sánchez Villagra, M. R.
author Scheyer, T. M.
author_facet Scheyer, T. M.
Aguilera, Oscar Alberto
Delfino, M.
Fortier, D. C.
Carlini, Alfredo Armando
Sánchez, R.
Carrillo Briceño, J. D.
Quiroz, L.
Sánchez Villagra, M. R.
author_role author
author2 Aguilera, Oscar Alberto
Delfino, M.
Fortier, D. C.
Carlini, Alfredo Armando
Sánchez, R.
Carrillo Briceño, J. D.
Quiroz, L.
Sánchez Villagra, M. R.
author2_role author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Paleontología
Crocodylia
Norther southamerica
Diversity
Late cenozoic
topic Paleontología
Crocodylia
Norther southamerica
Diversity
Late cenozoic
dc.description.none.fl_txt_mv Northern South America and South East Asia are today’s hotspots of crocodylian diversity with up to six (mainly alligatorid) and four (mainly crocodylid) living species respectively, of which usually no more than two or three occur sympatrically. In contrast, during the late Miocene, 14 species existed in South America. Here we show a diversity peak in sympatric occurrence of at least seven species, based on detailed stratigraphic sequence sampling and correlation, involving four geological formations from the middle Miocene to the Pliocene, and on the discovery of two new species and a new occurrence. This degree of crocodylian sympatry is unique in the world and shows that at least several members of Alligatoroidea and Gavialoidea coexisted. By the Pliocene, all these species became extinct, and their extinction was probably related to hydrographic changes linked to the Andean uplift. The extant fauna is first recorded with the oldest Crocodylus species from South America.
Facultad de Ciencias Naturales y Museo
description Northern South America and South East Asia are today’s hotspots of crocodylian diversity with up to six (mainly alligatorid) and four (mainly crocodylid) living species respectively, of which usually no more than two or three occur sympatrically. In contrast, during the late Miocene, 14 species existed in South America. Here we show a diversity peak in sympatric occurrence of at least seven species, based on detailed stratigraphic sequence sampling and correlation, involving four geological formations from the middle Miocene to the Pliocene, and on the discovery of two new species and a new occurrence. This degree of crocodylian sympatry is unique in the world and shows that at least several members of Alligatoroidea and Gavialoidea coexisted. By the Pliocene, all these species became extinct, and their extinction was probably related to hydrographic changes linked to the Andean uplift. The extant fauna is first recorded with the oldest Crocodylus species from South America.
publishDate 2013
dc.date.none.fl_str_mv 2013-05
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
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dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://ri.conicet.gov.ar/11336/13639
info:eu-repo/semantics/altIdentifier/url/http://www.nature.com/articles/ncomms2940
info:eu-repo/semantics/altIdentifier/issn/2041-1723
info:eu-repo/semantics/altIdentifier/doi/10.1038/ncomms2940
info:eu-repo/semantics/altIdentifier/hdl/11336/13639
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
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Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
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rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
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