Dos nuevos marsupiales “pseudodiprotodontes” del Eoceno de Patagonia, Argentina

Quirogalestes alniagaucha n. gen. et sp. is an early Eocene Pichipilinae (Paucituberculata, Caenolestidae) distinguished from Pichipilus and Plionocdromus by the larger size of its p3, and by having a lower molar pattern that is primitive with respect to those of Pichipilus and Plionocdromus. The pr...

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Detalles Bibliográficos
Autores: Goin, Francisco Javier, Candela, Adriana Magdalena
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:1998
País:Argentina
Institución:Universidad Nacional de La Plata
Repositorio:SEDICI (UNLP)
Idioma:español
OAI Identifier:oai:sedici.unlp.edu.ar:10915/116000
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/116000
Access Level:acceso abierto
Palabra clave:Paleontología
Marsupialia
Paucituberculata
Polydolopimorphia
Systematics
Eocene
Patagonia
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spelling Dos nuevos marsupiales “pseudodiprotodontes” del Eoceno de Patagonia, ArgentinaTwo new “pseudodiprotodont” marsupials from the Eocene of PatagoniaGoin, Francisco JavierCandela, Adriana MagdalenaPaleontologíaMarsupialiaPaucituberculataPolydolopimorphiaSystematicsEocenePatagoniaQuirogalestes alniagaucha n. gen. et sp. is an early Eocene Pichipilinae (Paucituberculata, Caenolestidae) distinguished from Pichipilus and Plionocdromus by the larger size of its p3, and by having a lower molar pattern that is primitive with respect to those of Pichipilus and Plionocdromus. The protoconid is less reduced, the anterobasal cingulum is moderately developed, and the paraconid and metaconid are only slightly separated. The holotype, and only known specimen, was recovered from middle levels of Casamayor Fm. (Casamayoran Age; early Eocene) at Cerrito Fructuoso, in Valle Hermoso (Chubut Province, Argentina). It represents the oldest and more generalized pichipiline known to date. The middle Eocene Hondonadia feruglioi n. gen. et sp. (?Polydolopimorphia) resembles several polydolopimorphians in the size of its upper canine, the length and width of the incisive vacuities, an upper molar pattern characterized by a well-developed “hypocone” (displaced metaconule), and a (moderate) twinning of the paracone and metacone with stylar cusps B and D, respectively. The holotype, and only known specimen, comes from middle Eocene (Mustersan Age) levels at Gran Hondonada (= “Pozon Grande”; Sarmiento Group), near Paso de Indios (Tehuelches Department, Chubut Province, Argentina). It may represent the persistence (into well-advanced Paleogene times) of a relatively generalized polydolopimorphian quadritubercular molar pattern, which was already established in southern South America by the middle Paleocene.Facultad de Ciencias Naturales y Museo1998info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf79-84http://sedici.unlp.edu.ar/handle/10915/116000spainfo:eu-repo/semantics/altIdentifier/url/https://www.peapaleontologica.org.ar/index.php/peapa/article/view/180info:eu-repo/semantics/altIdentifier/issn/0328-347Xinfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc/4.0/Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2024-05-08T13:05:24Zoai:sedici.unlp.edu.ar:10915/116000Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292024-05-08 13:05:24.59SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Dos nuevos marsupiales “pseudodiprotodontes” del Eoceno de Patagonia, Argentina
Two new “pseudodiprotodont” marsupials from the Eocene of Patagonia
title Dos nuevos marsupiales “pseudodiprotodontes” del Eoceno de Patagonia, Argentina
spellingShingle Dos nuevos marsupiales “pseudodiprotodontes” del Eoceno de Patagonia, Argentina
Goin, Francisco Javier
Paleontología
Marsupialia
Paucituberculata
Polydolopimorphia
Systematics
Eocene
Patagonia
title_short Dos nuevos marsupiales “pseudodiprotodontes” del Eoceno de Patagonia, Argentina
title_full Dos nuevos marsupiales “pseudodiprotodontes” del Eoceno de Patagonia, Argentina
title_fullStr Dos nuevos marsupiales “pseudodiprotodontes” del Eoceno de Patagonia, Argentina
title_full_unstemmed Dos nuevos marsupiales “pseudodiprotodontes” del Eoceno de Patagonia, Argentina
title_sort Dos nuevos marsupiales “pseudodiprotodontes” del Eoceno de Patagonia, Argentina
dc.creator.none.fl_str_mv Goin, Francisco Javier
Candela, Adriana Magdalena
author Goin, Francisco Javier
author_facet Goin, Francisco Javier
Candela, Adriana Magdalena
author_role author
author2 Candela, Adriana Magdalena
author2_role author
dc.subject.none.fl_str_mv Paleontología
Marsupialia
Paucituberculata
Polydolopimorphia
Systematics
Eocene
Patagonia
topic Paleontología
Marsupialia
Paucituberculata
Polydolopimorphia
Systematics
Eocene
Patagonia
description Quirogalestes alniagaucha n. gen. et sp. is an early Eocene Pichipilinae (Paucituberculata, Caenolestidae) distinguished from Pichipilus and Plionocdromus by the larger size of its p3, and by having a lower molar pattern that is primitive with respect to those of Pichipilus and Plionocdromus. The protoconid is less reduced, the anterobasal cingulum is moderately developed, and the paraconid and metaconid are only slightly separated. The holotype, and only known specimen, was recovered from middle levels of Casamayor Fm. (Casamayoran Age; early Eocene) at Cerrito Fructuoso, in Valle Hermoso (Chubut Province, Argentina). It represents the oldest and more generalized pichipiline known to date. The middle Eocene Hondonadia feruglioi n. gen. et sp. (?Polydolopimorphia) resembles several polydolopimorphians in the size of its upper canine, the length and width of the incisive vacuities, an upper molar pattern characterized by a well-developed “hypocone” (displaced metaconule), and a (moderate) twinning of the paracone and metacone with stylar cusps B and D, respectively. The holotype, and only known specimen, comes from middle Eocene (Mustersan Age) levels at Gran Hondonada (= “Pozon Grande”; Sarmiento Group), near Paso de Indios (Tehuelches Department, Chubut Province, Argentina). It may represent the persistence (into well-advanced Paleogene times) of a relatively generalized polydolopimorphian quadritubercular molar pattern, which was already established in southern South America by the middle Paleocene.
publishDate 1998
dc.date.none.fl_str_mv 1998
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/10915/116000
url http://sedici.unlp.edu.ar/handle/10915/116000
dc.language.none.fl_str_mv spa
language spa
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.peapaleontologica.org.ar/index.php/peapa/article/view/180
info:eu-repo/semantics/altIdentifier/issn/0328-347X
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc/4.0/
Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc/4.0/
Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)
dc.format.none.fl_str_mv application/pdf
79-84
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (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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