Late middle Eocene Caviomorph Rodents from Contamana, Peruvian Amazonia

Autores
Boivin, Myriam; Marivaux, Laurent; Orliac, Maëva J.; Pujos, François Roger Francis; Salas Gismondi, Rodolfo; Tejada Lara, Julia V.; Antoine, Pierre Olivier
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Caviomorph rodents represent one of the most successful groups of placental mammals from South America. Despite their modern, Neogene and late Paleogene high diversity, their early evolutionary history has long remained obscure. Recent field expeditions in Peruvian Amazonia have yielded among the earliest representatives of that group, in deposits dating from the late middle Eocene (Contamana, CTA-27 locality, ~41 Ma). Here, we provide an exhaustive analysis of the rodent material from CTA27 and from new sub-coeval localities discovered in the same area and geological formation (Pozo Formation): CTA-47, CTA-51, CTA-73, CTA-66, and CTA-29. A total of 20 rodent taxa are identified in these localities, among which one from CTA-29 (Pozomys ucayaliensis gen. et sp. nov.) remains with uncertain suprafamilial affinities. Additionally, the material of CTA-27 previously attributed to Eobranisamys sp. is assigned here to the new species Eobranisamys javierpradoi. In terms of taxonomic composition, Eocene localities from Contamana area have many taxa in common (Cachiyacuy, Canaanimys, Eobranisamys, and Eoespina, or very close relatives). These Eocene assemblages are clearly distinct from Oligocene ones, mostly documented at mid and high latitudes. In contrast, they share some affinities with the late Eocene-earliest Oligocene Santa Rosa locality (Peruvian Amazonia), from which the two genera Eobranisamys and Eoespina were originally described. This faunal closeness might more reflect biogeographic affinities than contemporaneity. In addition, the occlusal pattern of some upper molars of Eosallamys from Santa Rosa recalls that of Cachiyacuy and Canaanimys. These low-latitude caviomorph assemblages provide new insights into the early evolutionary history, biogeography, and paleodiversity of that group
Fil: Boivin, Myriam. Université Montpellier II; Francia. Centre National de la Recherche Scientifique; Francia
Fil: Marivaux, Laurent. Laboratoire de Paléontologie, Ise-m; Francia
Fil: Orliac, Maëva J.. Laboratoire de Paléontologie, Ise-m; Francia
Fil: Pujos, François Roger Francis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina
Fil: Salas Gismondi, Rodolfo. Departamento de Paleontología de Vertebrados, Musm; Perú
Fil: Tejada Lara, Julia V.. Departamento de Paleontología de Vertebrados, Musm; Perú
Fil: Antoine, Pierre Olivier. Laboratoire de Paléontologie, Ise-m; Francia
Materia
Caviomorph Rodents
Late middle Eocene
Contamana
Peruvian Amazonia
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:11336/66430
Acceder
id CONICETDig_fa407e8d928b9ba7ffda4f1aea27ae9a
oai_identifier_str oai:ri.conicet.gov.ar:11336/66430
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Late middle Eocene Caviomorph Rodents from Contamana, Peruvian AmazoniaBoivin, MyriamMarivaux, LaurentOrliac, Maëva J.Pujos, François Roger FrancisSalas Gismondi, RodolfoTejada Lara, Julia V.Antoine, Pierre OlivierCaviomorph RodentsLate middle EoceneContamanaPeruvian Amazoniahttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Caviomorph rodents represent one of the most successful groups of placental mammals from South America. Despite their modern, Neogene and late Paleogene high diversity, their early evolutionary history has long remained obscure. Recent field expeditions in Peruvian Amazonia have yielded among the earliest representatives of that group, in deposits dating from the late middle Eocene (Contamana, CTA-27 locality, ~41 Ma). Here, we provide an exhaustive analysis of the rodent material from CTA27 and from new sub-coeval localities discovered in the same area and geological formation (Pozo Formation): CTA-47, CTA-51, CTA-73, CTA-66, and CTA-29. A total of 20 rodent taxa are identified in these localities, among which one from CTA-29 (Pozomys ucayaliensis gen. et sp. nov.) remains with uncertain suprafamilial affinities. Additionally, the material of CTA-27 previously attributed to Eobranisamys sp. is assigned here to the new species Eobranisamys javierpradoi. In terms of taxonomic composition, Eocene localities from Contamana area have many taxa in common (Cachiyacuy, Canaanimys, Eobranisamys, and Eoespina, or very close relatives). These Eocene assemblages are clearly distinct from Oligocene ones, mostly documented at mid and high latitudes. In contrast, they share some affinities with the late Eocene-earliest Oligocene Santa Rosa locality (Peruvian Amazonia), from which the two genera Eobranisamys and Eoespina were originally described. This faunal closeness might more reflect biogeographic affinities than contemporaneity. In addition, the occlusal pattern of some upper molars of Eosallamys from Santa Rosa recalls that of Cachiyacuy and Canaanimys. These low-latitude caviomorph assemblages provide new insights into the early evolutionary history, biogeography, and paleodiversity of that groupFil: Boivin, Myriam. Université Montpellier II; Francia. Centre National de la Recherche Scientifique; FranciaFil: Marivaux, Laurent. Laboratoire de Paléontologie, Ise-m; FranciaFil: Orliac, Maëva J.. Laboratoire de Paléontologie, Ise-m; FranciaFil: Pujos, François Roger Francis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; ArgentinaFil: Salas Gismondi, Rodolfo. Departamento de Paleontología de Vertebrados, Musm; PerúFil: Tejada Lara, Julia V.. Departamento de Paleontología de Vertebrados, Musm; PerúFil: Antoine, Pierre Olivier. Laboratoire de Paléontologie, Ise-m; FranciaCoquina Press2017-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/66430Boivin, Myriam; Marivaux, Laurent; Orliac, Maëva J.; Pujos, François Roger Francis; Salas Gismondi, Rodolfo; et al.; Late middle Eocene Caviomorph Rodents from Contamana, Peruvian Amazonia; Coquina Press; Palaeontologia Electronica; 20; 1; 4-2017; 1-501094-80741532-3056CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://palaeo-electronica.org/content/pdfs/742.pdfinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:52:34Zoai:ri.conicet.gov.ar:11336/66430instacron: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 09:52:34.293CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Late middle Eocene Caviomorph Rodents from Contamana, Peruvian Amazonia
title Late middle Eocene Caviomorph Rodents from Contamana, Peruvian Amazonia
spellingShingle Late middle Eocene Caviomorph Rodents from Contamana, Peruvian Amazonia
Boivin, Myriam
Caviomorph Rodents
Late middle Eocene
Contamana
Peruvian Amazonia
title_short Late middle Eocene Caviomorph Rodents from Contamana, Peruvian Amazonia
title_full Late middle Eocene Caviomorph Rodents from Contamana, Peruvian Amazonia
title_fullStr Late middle Eocene Caviomorph Rodents from Contamana, Peruvian Amazonia
title_full_unstemmed Late middle Eocene Caviomorph Rodents from Contamana, Peruvian Amazonia
title_sort Late middle Eocene Caviomorph Rodents from Contamana, Peruvian Amazonia
dc.creator.none.fl_str_mv Boivin, Myriam
Marivaux, Laurent
Orliac, Maëva J.
Pujos, François Roger Francis
Salas Gismondi, Rodolfo
Tejada Lara, Julia V.
Antoine, Pierre Olivier
author Boivin, Myriam
author_facet Boivin, Myriam
Marivaux, Laurent
Orliac, Maëva J.
Pujos, François Roger Francis
Salas Gismondi, Rodolfo
Tejada Lara, Julia V.
Antoine, Pierre Olivier
author_role author
author2 Marivaux, Laurent
Orliac, Maëva J.
Pujos, François Roger Francis
Salas Gismondi, Rodolfo
Tejada Lara, Julia V.
Antoine, Pierre Olivier
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Caviomorph Rodents
Late middle Eocene
Contamana
Peruvian Amazonia
topic Caviomorph Rodents
Late middle Eocene
Contamana
Peruvian Amazonia
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Caviomorph rodents represent one of the most successful groups of placental mammals from South America. Despite their modern, Neogene and late Paleogene high diversity, their early evolutionary history has long remained obscure. Recent field expeditions in Peruvian Amazonia have yielded among the earliest representatives of that group, in deposits dating from the late middle Eocene (Contamana, CTA-27 locality, ~41 Ma). Here, we provide an exhaustive analysis of the rodent material from CTA27 and from new sub-coeval localities discovered in the same area and geological formation (Pozo Formation): CTA-47, CTA-51, CTA-73, CTA-66, and CTA-29. A total of 20 rodent taxa are identified in these localities, among which one from CTA-29 (Pozomys ucayaliensis gen. et sp. nov.) remains with uncertain suprafamilial affinities. Additionally, the material of CTA-27 previously attributed to Eobranisamys sp. is assigned here to the new species Eobranisamys javierpradoi. In terms of taxonomic composition, Eocene localities from Contamana area have many taxa in common (Cachiyacuy, Canaanimys, Eobranisamys, and Eoespina, or very close relatives). These Eocene assemblages are clearly distinct from Oligocene ones, mostly documented at mid and high latitudes. In contrast, they share some affinities with the late Eocene-earliest Oligocene Santa Rosa locality (Peruvian Amazonia), from which the two genera Eobranisamys and Eoespina were originally described. This faunal closeness might more reflect biogeographic affinities than contemporaneity. In addition, the occlusal pattern of some upper molars of Eosallamys from Santa Rosa recalls that of Cachiyacuy and Canaanimys. These low-latitude caviomorph assemblages provide new insights into the early evolutionary history, biogeography, and paleodiversity of that group
Fil: Boivin, Myriam. Université Montpellier II; Francia. Centre National de la Recherche Scientifique; Francia
Fil: Marivaux, Laurent. Laboratoire de Paléontologie, Ise-m; Francia
Fil: Orliac, Maëva J.. Laboratoire de Paléontologie, Ise-m; Francia
Fil: Pujos, François Roger Francis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina
Fil: Salas Gismondi, Rodolfo. Departamento de Paleontología de Vertebrados, Musm; Perú
Fil: Tejada Lara, Julia V.. Departamento de Paleontología de Vertebrados, Musm; Perú
Fil: Antoine, Pierre Olivier. Laboratoire de Paléontologie, Ise-m; Francia
description Caviomorph rodents represent one of the most successful groups of placental mammals from South America. Despite their modern, Neogene and late Paleogene high diversity, their early evolutionary history has long remained obscure. Recent field expeditions in Peruvian Amazonia have yielded among the earliest representatives of that group, in deposits dating from the late middle Eocene (Contamana, CTA-27 locality, ~41 Ma). Here, we provide an exhaustive analysis of the rodent material from CTA27 and from new sub-coeval localities discovered in the same area and geological formation (Pozo Formation): CTA-47, CTA-51, CTA-73, CTA-66, and CTA-29. A total of 20 rodent taxa are identified in these localities, among which one from CTA-29 (Pozomys ucayaliensis gen. et sp. nov.) remains with uncertain suprafamilial affinities. Additionally, the material of CTA-27 previously attributed to Eobranisamys sp. is assigned here to the new species Eobranisamys javierpradoi. In terms of taxonomic composition, Eocene localities from Contamana area have many taxa in common (Cachiyacuy, Canaanimys, Eobranisamys, and Eoespina, or very close relatives). These Eocene assemblages are clearly distinct from Oligocene ones, mostly documented at mid and high latitudes. In contrast, they share some affinities with the late Eocene-earliest Oligocene Santa Rosa locality (Peruvian Amazonia), from which the two genera Eobranisamys and Eoespina were originally described. This faunal closeness might more reflect biogeographic affinities than contemporaneity. In addition, the occlusal pattern of some upper molars of Eosallamys from Santa Rosa recalls that of Cachiyacuy and Canaanimys. These low-latitude caviomorph assemblages provide new insights into the early evolutionary history, biogeography, and paleodiversity of that group
publishDate 2017
dc.date.none.fl_str_mv 2017-04
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/11336/66430
Boivin, Myriam; Marivaux, Laurent; Orliac, Maëva J.; Pujos, François Roger Francis; Salas Gismondi, Rodolfo; et al.; Late middle Eocene Caviomorph Rodents from Contamana, Peruvian Amazonia; Coquina Press; Palaeontologia Electronica; 20; 1; 4-2017; 1-50
1094-8074
1532-3056
CONICET Digital
CONICET
url http://hdl.handle.net/11336/66430
identifier_str_mv Boivin, Myriam; Marivaux, Laurent; Orliac, Maëva J.; Pujos, François Roger Francis; Salas Gismondi, Rodolfo; et al.; Late middle Eocene Caviomorph Rodents from Contamana, Peruvian Amazonia; Coquina Press; Palaeontologia Electronica; 20; 1; 4-2017; 1-50
1094-8074
1532-3056
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://palaeo-electronica.org/content/pdfs/742.pdf
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 Coquina Press
publisher.none.fl_str_mv Coquina Press
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
_version_ 1842269167056584704
score 13.13397

Publicaciones similares