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Article . 2010
License: CC BY NC ND
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Article . 1995
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Un nuevo Notopithecinae (Notoungulata, Typotheria) del Terciario Inferior de la Puna argentina

Authors: López, Guillermo; Bond, Mariano;

Un nuevo Notopithecinae (Notoungulata, Typotheria) del Terciario Inferior de la Puna argentina

Abstract

[ES] Los Interatheriidae Notopithecinae son un grupo de notoungulados tipoterios de tama?o muy peque?o, muy frecuentes en el Pale?geno de Patagonia; generalmente, han sido considerados como ancestrales a la m?s avanzada subfamilia Interatheriinae. Aqu? se describe Punapithecus minor n. gen. y n. sp., proveniente de la Formaci?n Geste (Grupo Pastos Grandes) de Antofagasta de la Sierra, Provincia de Catamarca y San Antonio de los Cobres, Provincia de Salta, en el noroeste argentino. El nivel fosil?fero ha sido asignado, por su fauna asociada, a la Edad Mustersense (Eoceno medio). Este es el primer registro para este grupo fuera de Patagonia en la Argentina; tambi?n se los ha registrado, con certeza, en capas del Pale?geno de Chile. Punapithecus minor presenta los siguientes caracteres diagn?sticos: Tama?o m?s peque?o (al menos la mitad) que el de todos los otros Notopithecinae conocidos. Corona m?s baja que los otros notopitecinos. Molares superiores con el paralofo y metalofo abiertos lingualmente, a?n en estados avanzados de desgaste; fosetas antero y posteroexternas poco persistentes, y con los c?ngulos anterior y posterior muy desarrollados. Los p3-p4 con el tal?nido m?s desarrollado que en los otros Notopithecinae. Dientes molariformes inferiores con el entoc?nido m?s bunoide. Los caracteres antes mencionados distinguen a P. minor como un muy peculiar integrante de la subfamilia Notopithecinae, diferente de los taxones patag?nicos y representante, tal vez, de un linaje m?s conservador; probablemente relacionado a una forma no descripta del Eoceno superior u Oligoceno inferior de Tinguiririca, Chile central. Sugestivamente estas dos formas han sido registradas fuera de Patagonia.

[EN] The Notopithecinae Interatheriidae are a group of very small typotherian notoungulates, very frequent in the Patagonian Paleogene; generally, they have been considered as ancestral for the more advanced Interatheriinae subfamily. Here, is described Punapithecus minor n. genus and species, from the Geste Formation (Pastos Grandes Group) in Antofagasta de la Sierra, Catamarca Province and San Antonio de los Cobres, Salta Province in northwestern Argentina. The fossiliferous level has been assigned, by its associated fauna, to the Mustersan Age (Middle Eocene). This is the first record for this group in Argentina outside Patagonia; also they have been, certainly, recorded in Paleogene beds of Chile. Punapithecus minor presents the following diagnostic characters: Smaller size (at least half the size) than all the known Notopithecinae. Lower crowned than all the other notopithecines. Upper molars with the paraloph and metaloph open lingually, even on advanced stages of wear; with anteroexternal and posteroexternal fossetes not persistent, and also with anterior and posterior cingula very well developed. The p3-p4 with the talonid more developed than the other Notopithecinae. Molariform lower teeth with the entoconid more bunoid. The afore mentioned characters distinguish P. minor as a very peculiar member of the Notopithecinae subfamily, very different from the Patagonian ones and representing perhaps a more conservative lineage, probably linked to a non descript form from the Upper Eocene or Lower Oligoc?ne of Tinguirica, Central Chile. Suggestively this two forms have been recorded otside Patagonia.

Country
Spain
Related Organizations
Keywords

Geolog?a, Geology, Geología

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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