A new didolodontid mammal from the late Paleocene–earliest Eocene of Laguna Umayo, Peru

Autores
Gelfo, Javier Nicolás; Sigé, Bernard
Año de publicación
2011
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
A previously undescribed tooth from the Muani Formation at the Laguna Umayo locality, Peru, represents the new didolodontid Umayodus raimondi gen. et sp. nov., here diagnosed by the presence of a well developed metastylid and ectostylid, and a twinned hypoconulid. This taxon is closely related to the middle Paleocene genera Escribania and Raulvaccia from the locality of Punta Peligro in Patagonia, Argentina. Phylogenetic analysis here performed indicates that they constitute a monophyletic group within Didolodontidae, supported by five derived characters: the hypocone well developed and close to the protocone; the strongly concave precingulum; the contact between the postcristid and the entoconid; the contact of the crista pre-paraconular, precingulum and parastyle; and the mesiodistal enlargement of the m3 talonid. Their paleogeographic distribution fit with those of the actual Andean Region of the Austral Kingdom. The previously assumed ThanetianYpresian age assignment for the Laguna Umayo LU3 fauna is here reinforced by faunistic comparisons with the earliest Eocene Murgon fauna, in Australia, and the Itaboraian South American Land Mammal Age, represented from faunas of Patagonia, Argentina and So Jos de Itabora, Brazil.
Facultad de Ciencias Naturales y Museo
Materia
Paleontología
Austral Kingdom
Condylarthra
Didolodontidae
Eocene
Mammalia
Paleocene
Peru
South America
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:10915/84217
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/84217
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling A new didolodontid mammal from the late Paleocene–earliest Eocene of Laguna Umayo, PeruGelfo, Javier NicolásSigé, BernardPaleontologíaAustral KingdomCondylarthraDidolodontidaeEoceneMammaliaPaleocenePeruSouth AmericaA previously undescribed tooth from the Muani Formation at the Laguna Umayo locality, Peru, represents the new didolodontid Umayodus raimondi gen. et sp. nov., here diagnosed by the presence of a well developed metastylid and ectostylid, and a twinned hypoconulid. This taxon is closely related to the middle Paleocene genera Escribania and Raulvaccia from the locality of Punta Peligro in Patagonia, Argentina. Phylogenetic analysis here performed indicates that they constitute a monophyletic group within Didolodontidae, supported by five derived characters: the hypocone well developed and close to the protocone; the strongly concave precingulum; the contact between the postcristid and the entoconid; the contact of the crista pre-paraconular, precingulum and parastyle; and the mesiodistal enlargement of the m3 talonid. Their paleogeographic distribution fit with those of the actual Andean Region of the Austral Kingdom. The previously assumed ThanetianYpresian age assignment for the Laguna Umayo LU3 fauna is here reinforced by faunistic comparisons with the earliest Eocene Murgon fauna, in Australia, and the Itaboraian South American Land Mammal Age, represented from faunas of Patagonia, Argentina and So Jos de Itabora, Brazil.Facultad de Ciencias Naturales y Museo2011info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf665-678http://sedici.unlp.edu.ar/handle/10915/84217enginfo:eu-repo/semantics/altIdentifier/issn/0567-7920info:eu-repo/semantics/altIdentifier/doi/10.4202/app.2010.0067info: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:UNLP2025-09-10T12:18:47Zoai:sedici.unlp.edu.ar:10915/84217Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-10 12:18:47.423SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv A new didolodontid mammal from the late Paleocene–earliest Eocene of Laguna Umayo, Peru
title A new didolodontid mammal from the late Paleocene–earliest Eocene of Laguna Umayo, Peru
spellingShingle A new didolodontid mammal from the late Paleocene–earliest Eocene of Laguna Umayo, Peru
Gelfo, Javier Nicolás
Paleontología
Austral Kingdom
Condylarthra
Didolodontidae
Eocene
Mammalia
Paleocene
Peru
South America
title_short A new didolodontid mammal from the late Paleocene–earliest Eocene of Laguna Umayo, Peru
title_full A new didolodontid mammal from the late Paleocene–earliest Eocene of Laguna Umayo, Peru
title_fullStr A new didolodontid mammal from the late Paleocene–earliest Eocene of Laguna Umayo, Peru
title_full_unstemmed A new didolodontid mammal from the late Paleocene–earliest Eocene of Laguna Umayo, Peru
title_sort A new didolodontid mammal from the late Paleocene–earliest Eocene of Laguna Umayo, Peru
dc.creator.none.fl_str_mv Gelfo, Javier Nicolás
Sigé, Bernard
author Gelfo, Javier Nicolás
author_facet Gelfo, Javier Nicolás
Sigé, Bernard
author_role author
author2 Sigé, Bernard
author2_role author
dc.subject.none.fl_str_mv Paleontología
Austral Kingdom
Condylarthra
Didolodontidae
Eocene
Mammalia
Paleocene
Peru
South America
topic Paleontología
Austral Kingdom
Condylarthra
Didolodontidae
Eocene
Mammalia
Paleocene
Peru
South America
dc.description.none.fl_txt_mv A previously undescribed tooth from the Muani Formation at the Laguna Umayo locality, Peru, represents the new didolodontid Umayodus raimondi gen. et sp. nov., here diagnosed by the presence of a well developed metastylid and ectostylid, and a twinned hypoconulid. This taxon is closely related to the middle Paleocene genera Escribania and Raulvaccia from the locality of Punta Peligro in Patagonia, Argentina. Phylogenetic analysis here performed indicates that they constitute a monophyletic group within Didolodontidae, supported by five derived characters: the hypocone well developed and close to the protocone; the strongly concave precingulum; the contact between the postcristid and the entoconid; the contact of the crista pre-paraconular, precingulum and parastyle; and the mesiodistal enlargement of the m3 talonid. Their paleogeographic distribution fit with those of the actual Andean Region of the Austral Kingdom. The previously assumed ThanetianYpresian age assignment for the Laguna Umayo LU3 fauna is here reinforced by faunistic comparisons with the earliest Eocene Murgon fauna, in Australia, and the Itaboraian South American Land Mammal Age, represented from faunas of Patagonia, Argentina and So Jos de Itabora, Brazil.
Facultad de Ciencias Naturales y Museo
description A previously undescribed tooth from the Muani Formation at the Laguna Umayo locality, Peru, represents the new didolodontid Umayodus raimondi gen. et sp. nov., here diagnosed by the presence of a well developed metastylid and ectostylid, and a twinned hypoconulid. This taxon is closely related to the middle Paleocene genera Escribania and Raulvaccia from the locality of Punta Peligro in Patagonia, Argentina. Phylogenetic analysis here performed indicates that they constitute a monophyletic group within Didolodontidae, supported by five derived characters: the hypocone well developed and close to the protocone; the strongly concave precingulum; the contact between the postcristid and the entoconid; the contact of the crista pre-paraconular, precingulum and parastyle; and the mesiodistal enlargement of the m3 talonid. Their paleogeographic distribution fit with those of the actual Andean Region of the Austral Kingdom. The previously assumed ThanetianYpresian age assignment for the Laguna Umayo LU3 fauna is here reinforced by faunistic comparisons with the earliest Eocene Murgon fauna, in Australia, and the Itaboraian South American Land Mammal Age, represented from faunas of Patagonia, Argentina and So Jos de Itabora, Brazil.
publishDate 2011
dc.date.none.fl_str_mv 2011
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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://sedici.unlp.edu.ar/handle/10915/84217
url http://sedici.unlp.edu.ar/handle/10915/84217
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0567-7920
info:eu-repo/semantics/altIdentifier/doi/10.4202/app.2010.0067
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
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
665-678
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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score 12.993085

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