A new record of a giant neoepiblemid rodent from Peruvian Amazonia and an overview of lower tooth dental homologies among chinchilloids

Autores
Boivin, Myriam; Antoine, Pierre Olivier; Benites Palomino, Aldo; Marivaux, Laurent; Salas Gismondi, Rodolfo
Año de publicación
2019
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We report here a new record of the giant caviomorph Phoberomys corresponding to a fragmentary mandible from the Monte Salvado area, Peruvian Amazonia (Madre de Dios Department). We describe this specimen and compare it with the material previously attributed to Phoberomys. The mandibular fragment is referred to as Phoberomys sp. Found as float on a bank of the Río Las Piedras, it has been hypothetically assigned a late Miocene age, due to the local/regional stratigraphic and lithologic context. This specimen constitutes the second record of Phoberomys in Peru. For the first time, the pattern of p4s and lower molars in Phoberomys was analyzed and compared to a large taxonomic sample (including Paleogene–Recent chinchilloids and other caviomorphs) in order to progress the understanding of the homology of dental structures in this genus. For p4s and lower molars, the position of the protoconid in Phoberomys and other chinchilloids (Drytomomys sp., Potamarchus, Eumegamys, Gyriabrus, Isostylomys, and Tetrastylus) is ambiguous, and as a result we propose two alternative homology hypotheses for these taxa: protoconid within the first and second laminae or within the third lamina on juvenile specimens. The knowledge of a comprehensive ontogenetic sequence in extinct and extant chinchilloids, associated with more complete palaeontological records, would likely allow for a clarification of these homology ambiguities.
Fil: Boivin, Myriam. Universidad Nacional de Jujuy. Instituto de Ecorregiones Andinas. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Ecorregiones Andinas; Argentina. Universite de Nantes; Francia. Centre National de la Recherche Scientifique; Francia
Fil: Antoine, Pierre Olivier. Université Montpellier II; Francia
Fil: Benites Palomino, Aldo. Universidad Nacional Mayor de San Marcos; Perú
Fil: Marivaux, Laurent. Université Montpellier II; Francia
Fil: Salas Gismondi, Rodolfo. Universidad Nacional Mayor de San Marcos; Perú
Materia
MAMMALIA
MANDIBLE
MONTE SALVADO
PALAEOGENE
PERU
PHOBEROMYS
RODENTIA
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:11336/122949
Acceder
id CONICETDig_65addfabbbfa9c22cfadd1fcd0ea0cba
oai_identifier_str oai:ri.conicet.gov.ar:11336/122949
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling A new record of a giant neoepiblemid rodent from Peruvian Amazonia and an overview of lower tooth dental homologies among chinchilloidsBoivin, MyriamAntoine, Pierre OlivierBenites Palomino, AldoMarivaux, LaurentSalas Gismondi, RodolfoMAMMALIAMANDIBLEMONTE SALVADOPALAEOGENEPERUPHOBEROMYSRODENTIASOUTH AMERICAhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1We report here a new record of the giant caviomorph Phoberomys corresponding to a fragmentary mandible from the Monte Salvado area, Peruvian Amazonia (Madre de Dios Department). We describe this specimen and compare it with the material previously attributed to Phoberomys. The mandibular fragment is referred to as Phoberomys sp. Found as float on a bank of the Río Las Piedras, it has been hypothetically assigned a late Miocene age, due to the local/regional stratigraphic and lithologic context. This specimen constitutes the second record of Phoberomys in Peru. For the first time, the pattern of p4s and lower molars in Phoberomys was analyzed and compared to a large taxonomic sample (including Paleogene–Recent chinchilloids and other caviomorphs) in order to progress the understanding of the homology of dental structures in this genus. For p4s and lower molars, the position of the protoconid in Phoberomys and other chinchilloids (Drytomomys sp., Potamarchus, Eumegamys, Gyriabrus, Isostylomys, and Tetrastylus) is ambiguous, and as a result we propose two alternative homology hypotheses for these taxa: protoconid within the first and second laminae or within the third lamina on juvenile specimens. The knowledge of a comprehensive ontogenetic sequence in extinct and extant chinchilloids, associated with more complete palaeontological records, would likely allow for a clarification of these homology ambiguities.Fil: Boivin, Myriam. Universidad Nacional de Jujuy. Instituto de Ecorregiones Andinas. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Ecorregiones Andinas; Argentina. Universite de Nantes; Francia. Centre National de la Recherche Scientifique; FranciaFil: Antoine, Pierre Olivier. Université Montpellier II; FranciaFil: Benites Palomino, Aldo. Universidad Nacional Mayor de San Marcos; PerúFil: Marivaux, Laurent. Université Montpellier II; FranciaFil: Salas Gismondi, Rodolfo. Universidad Nacional Mayor de San Marcos; PerúPolish Academy of Sciences. Institute of Paleobiology2019-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/122949Boivin, Myriam; Antoine, Pierre Olivier; Benites Palomino, Aldo; Marivaux, Laurent; Salas Gismondi, Rodolfo; A new record of a giant neoepiblemid rodent from Peruvian Amazonia and an overview of lower tooth dental homologies among chinchilloids; Polish Academy of Sciences. Institute of Paleobiology; Acta Palaeontologica Polonica; 64; 3; 5-2019; 627-6420567-79201732-2421CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.4202/app.00609.2019info:eu-repo/semantics/altIdentifier/url/https://www.app.pan.pl/article/item/app006092019.htmlinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:45:17Zoai:ri.conicet.gov.ar:11336/122949instacron: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 09:45:18.08CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv A new record of a giant neoepiblemid rodent from Peruvian Amazonia and an overview of lower tooth dental homologies among chinchilloids
title A new record of a giant neoepiblemid rodent from Peruvian Amazonia and an overview of lower tooth dental homologies among chinchilloids
spellingShingle A new record of a giant neoepiblemid rodent from Peruvian Amazonia and an overview of lower tooth dental homologies among chinchilloids
Boivin, Myriam
MAMMALIA
MANDIBLE
MONTE SALVADO
PALAEOGENE
PERU
PHOBEROMYS
RODENTIA
SOUTH AMERICA
title_short A new record of a giant neoepiblemid rodent from Peruvian Amazonia and an overview of lower tooth dental homologies among chinchilloids
title_full A new record of a giant neoepiblemid rodent from Peruvian Amazonia and an overview of lower tooth dental homologies among chinchilloids
title_fullStr A new record of a giant neoepiblemid rodent from Peruvian Amazonia and an overview of lower tooth dental homologies among chinchilloids
title_full_unstemmed A new record of a giant neoepiblemid rodent from Peruvian Amazonia and an overview of lower tooth dental homologies among chinchilloids
title_sort A new record of a giant neoepiblemid rodent from Peruvian Amazonia and an overview of lower tooth dental homologies among chinchilloids
dc.creator.none.fl_str_mv Boivin, Myriam
Antoine, Pierre Olivier
Benites Palomino, Aldo
Marivaux, Laurent
Salas Gismondi, Rodolfo
author Boivin, Myriam
author_facet Boivin, Myriam
Antoine, Pierre Olivier
Benites Palomino, Aldo
Marivaux, Laurent
Salas Gismondi, Rodolfo
author_role author
author2 Antoine, Pierre Olivier
Benites Palomino, Aldo
Marivaux, Laurent
Salas Gismondi, Rodolfo
author2_role author
author
author
author
dc.subject.none.fl_str_mv MAMMALIA
MANDIBLE
MONTE SALVADO
PALAEOGENE
PERU
PHOBEROMYS
RODENTIA
SOUTH AMERICA
topic MAMMALIA
MANDIBLE
MONTE SALVADO
PALAEOGENE
PERU
PHOBEROMYS
RODENTIA
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 We report here a new record of the giant caviomorph Phoberomys corresponding to a fragmentary mandible from the Monte Salvado area, Peruvian Amazonia (Madre de Dios Department). We describe this specimen and compare it with the material previously attributed to Phoberomys. The mandibular fragment is referred to as Phoberomys sp. Found as float on a bank of the Río Las Piedras, it has been hypothetically assigned a late Miocene age, due to the local/regional stratigraphic and lithologic context. This specimen constitutes the second record of Phoberomys in Peru. For the first time, the pattern of p4s and lower molars in Phoberomys was analyzed and compared to a large taxonomic sample (including Paleogene–Recent chinchilloids and other caviomorphs) in order to progress the understanding of the homology of dental structures in this genus. For p4s and lower molars, the position of the protoconid in Phoberomys and other chinchilloids (Drytomomys sp., Potamarchus, Eumegamys, Gyriabrus, Isostylomys, and Tetrastylus) is ambiguous, and as a result we propose two alternative homology hypotheses for these taxa: protoconid within the first and second laminae or within the third lamina on juvenile specimens. The knowledge of a comprehensive ontogenetic sequence in extinct and extant chinchilloids, associated with more complete palaeontological records, would likely allow for a clarification of these homology ambiguities.
Fil: Boivin, Myriam. Universidad Nacional de Jujuy. Instituto de Ecorregiones Andinas. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Ecorregiones Andinas; Argentina. Universite de Nantes; Francia. Centre National de la Recherche Scientifique; Francia
Fil: Antoine, Pierre Olivier. Université Montpellier II; Francia
Fil: Benites Palomino, Aldo. Universidad Nacional Mayor de San Marcos; Perú
Fil: Marivaux, Laurent. Université Montpellier II; Francia
Fil: Salas Gismondi, Rodolfo. Universidad Nacional Mayor de San Marcos; Perú
description We report here a new record of the giant caviomorph Phoberomys corresponding to a fragmentary mandible from the Monte Salvado area, Peruvian Amazonia (Madre de Dios Department). We describe this specimen and compare it with the material previously attributed to Phoberomys. The mandibular fragment is referred to as Phoberomys sp. Found as float on a bank of the Río Las Piedras, it has been hypothetically assigned a late Miocene age, due to the local/regional stratigraphic and lithologic context. This specimen constitutes the second record of Phoberomys in Peru. For the first time, the pattern of p4s and lower molars in Phoberomys was analyzed and compared to a large taxonomic sample (including Paleogene–Recent chinchilloids and other caviomorphs) in order to progress the understanding of the homology of dental structures in this genus. For p4s and lower molars, the position of the protoconid in Phoberomys and other chinchilloids (Drytomomys sp., Potamarchus, Eumegamys, Gyriabrus, Isostylomys, and Tetrastylus) is ambiguous, and as a result we propose two alternative homology hypotheses for these taxa: protoconid within the first and second laminae or within the third lamina on juvenile specimens. The knowledge of a comprehensive ontogenetic sequence in extinct and extant chinchilloids, associated with more complete palaeontological records, would likely allow for a clarification of these homology ambiguities.
publishDate 2019
dc.date.none.fl_str_mv 2019-05
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/11336/122949
Boivin, Myriam; Antoine, Pierre Olivier; Benites Palomino, Aldo; Marivaux, Laurent; Salas Gismondi, Rodolfo; A new record of a giant neoepiblemid rodent from Peruvian Amazonia and an overview of lower tooth dental homologies among chinchilloids; Polish Academy of Sciences. Institute of Paleobiology; Acta Palaeontologica Polonica; 64; 3; 5-2019; 627-642
0567-7920
1732-2421
CONICET Digital
CONICET
url http://hdl.handle.net/11336/122949
identifier_str_mv Boivin, Myriam; Antoine, Pierre Olivier; Benites Palomino, Aldo; Marivaux, Laurent; Salas Gismondi, Rodolfo; A new record of a giant neoepiblemid rodent from Peruvian Amazonia and an overview of lower tooth dental homologies among chinchilloids; Polish Academy of Sciences. Institute of Paleobiology; Acta Palaeontologica Polonica; 64; 3; 5-2019; 627-642
0567-7920
1732-2421
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.4202/app.00609.2019
info:eu-repo/semantics/altIdentifier/url/https://www.app.pan.pl/article/item/app006092019.html
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 Polish Academy of Sciences. Institute of Paleobiology
publisher.none.fl_str_mv Polish Academy of Sciences. Institute of Paleobiology
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_ 1842268720780541952
score 13.13397

Publicaciones similares