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 principales: Goin, Francisco Javier, Candela, Adriana Magdalena
Formato: Articulo
Lenguaje:Español
Publicado: 1998
Materias:
Paleontología
Marsupialia
Paucituberculata
Polydolopimorphia
Systematics
Eocene
Patagonia
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/116000
https://www.peapaleontologica.org.ar/index.php/peapa/article/view/180
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-116000
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Español
topic Paleontología
Marsupialia
Paucituberculata
Polydolopimorphia
Systematics
Eocene
Patagonia
spellingShingle Paleontología
Marsupialia
Paucituberculata
Polydolopimorphia
Systematics
Eocene
Patagonia
Goin, Francisco Javier
Candela, Adriana Magdalena
Dos nuevos marsupiales “pseudodiprotodontes” del Eoceno de Patagonia, Argentina
topic_facet 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.
format Articulo
Articulo
author Goin, Francisco Javier
Candela, Adriana Magdalena
author_facet Goin, Francisco Javier
Candela, Adriana Magdalena
author_sort Goin, Francisco Javier
title Dos nuevos marsupiales “pseudodiprotodontes” del Eoceno de Patagonia, Argentina
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
publishDate 1998
url http://sedici.unlp.edu.ar/handle/10915/116000
https://www.peapaleontologica.org.ar/index.php/peapa/article/view/180
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