Revisión sistemática de los Tremarctinae (Carnivora, Ursidae) fósiles de América del Sur

Autores
Soibelzon, Leopoldo Héctor
Año de publicación
2004
Idioma
español castellano
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The systematics, and the geographic and stratigraphic distribution of the South American fossil taxa of Tremarctinae (Carnivora, Ursidae) are reviewed and discussed. New diagnostic characters are proposed, in order to support each taxon. Only one genus (Arctotherium), of the Pleistocene and Lower Holocene of South America, is recognized, with five species: A. vetustum Ameghino, A. wingei Ameghino, A. angustidens Gervais & Ameghino, A. bonariense (Gervais), and A. tarijense Ameghino. Arctotherium is recorded from the Ensenadan (Upper Pliocene to Middle Pleistocene) to the Lujanian (Upper Pleistocene to Lower Holocene) in Venezuela, Brazil, Bolivia, Uruguay, Argentina, and Chile. A. vetustum is recorded in the Bonaerian (Middle Pleistocene) in Argentina; A. wingei in the Lujanian in Venezuela, Bolivia and Brazil; A. angustidens in the Ensenadan of Bolivia and Argentina; A. bonariense in the Bonaerian and Lujanian of Argentina and A. tarijense in the Bonaerian and Lujanian of Uruguay, Argentina, and Chile. Arctotherium is characterized by ten features: the post palatine margin slightly overpasses the distal end of M2, P1-3 compressed in a triangular arrangement, protocone reduced or absent in P4, length between canine and P4 less than P4 mesio-distal length, metastyle reduced or absent in M1, M2 wider than in other ursids, p4 crown ellipsoidal shaped, m1 trigonid wider than in other ursids, m2 crown kidney shaped, m3 crown sub circulate shaped.
Museo de La Plata
Materia
Paleontología
Ciencias Naturales
Tremarctinae; carnivora; Peistocene
Grupos de Población Animal
Sudamérica
Ursidae
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc/3.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/5359
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/5359
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network_name_str SEDICI (UNLP)
spelling Revisión sistemática de los Tremarctinae (Carnivora, Ursidae) fósiles de América del SurSoibelzon, Leopoldo HéctorPaleontologíaCiencias NaturalesTremarctinae; carnivora; PeistoceneGrupos de Población AnimalSudaméricaUrsidaeThe systematics, and the geographic and stratigraphic distribution of the South American fossil taxa of Tremarctinae (Carnivora, Ursidae) are reviewed and discussed. New diagnostic characters are proposed, in order to support each taxon. Only one genus (Arctotherium), of the Pleistocene and Lower Holocene of South America, is recognized, with five species: A. vetustum Ameghino, A. wingei Ameghino, A. angustidens Gervais & Ameghino, A. bonariense (Gervais), and A. tarijense Ameghino. Arctotherium is recorded from the Ensenadan (Upper Pliocene to Middle Pleistocene) to the Lujanian (Upper Pleistocene to Lower Holocene) in Venezuela, Brazil, Bolivia, Uruguay, Argentina, and Chile. A. vetustum is recorded in the Bonaerian (Middle Pleistocene) in Argentina; A. wingei in the Lujanian in Venezuela, Bolivia and Brazil; A. angustidens in the Ensenadan of Bolivia and Argentina; A. bonariense in the Bonaerian and Lujanian of Argentina and A. tarijense in the Bonaerian and Lujanian of Uruguay, Argentina, and Chile. Arctotherium is characterized by ten features: the post palatine margin slightly overpasses the distal end of M2, P1-3 compressed in a triangular arrangement, protocone reduced or absent in P4, length between canine and P4 less than P4 mesio-distal length, metastyle reduced or absent in M1, M2 wider than in other ursids, p4 crown ellipsoidal shaped, m1 trigonid wider than in other ursids, m2 crown kidney shaped, m3 crown sub circulate shaped.Museo de La Plata2004info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf107-133http://sedici.unlp.edu.ar/handle/10915/5359spainfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc/3.0/Creative Commons Attribution-NonCommercial 3.0 Unported (CC BY-NC 3.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-03T10:22:26Zoai:sedici.unlp.edu.ar:10915/5359Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-03 10:22:27.264SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Revisión sistemática de los Tremarctinae (Carnivora, Ursidae) fósiles de América del Sur
title Revisión sistemática de los Tremarctinae (Carnivora, Ursidae) fósiles de América del Sur
spellingShingle Revisión sistemática de los Tremarctinae (Carnivora, Ursidae) fósiles de América del Sur
Soibelzon, Leopoldo Héctor
Paleontología
Ciencias Naturales
Tremarctinae; carnivora; Peistocene
Grupos de Población Animal
Sudamérica
Ursidae
title_short Revisión sistemática de los Tremarctinae (Carnivora, Ursidae) fósiles de América del Sur
title_full Revisión sistemática de los Tremarctinae (Carnivora, Ursidae) fósiles de América del Sur
title_fullStr Revisión sistemática de los Tremarctinae (Carnivora, Ursidae) fósiles de América del Sur
title_full_unstemmed Revisión sistemática de los Tremarctinae (Carnivora, Ursidae) fósiles de América del Sur
title_sort Revisión sistemática de los Tremarctinae (Carnivora, Ursidae) fósiles de América del Sur
dc.creator.none.fl_str_mv Soibelzon, Leopoldo Héctor
author Soibelzon, Leopoldo Héctor
author_facet Soibelzon, Leopoldo Héctor
author_role author
dc.subject.none.fl_str_mv Paleontología
Ciencias Naturales
Tremarctinae; carnivora; Peistocene
Grupos de Población Animal
Sudamérica
Ursidae
topic Paleontología
Ciencias Naturales
Tremarctinae; carnivora; Peistocene
Grupos de Población Animal
Sudamérica
Ursidae
dc.description.none.fl_txt_mv The systematics, and the geographic and stratigraphic distribution of the South American fossil taxa of Tremarctinae (Carnivora, Ursidae) are reviewed and discussed. New diagnostic characters are proposed, in order to support each taxon. Only one genus (Arctotherium), of the Pleistocene and Lower Holocene of South America, is recognized, with five species: A. vetustum Ameghino, A. wingei Ameghino, A. angustidens Gervais & Ameghino, A. bonariense (Gervais), and A. tarijense Ameghino. Arctotherium is recorded from the Ensenadan (Upper Pliocene to Middle Pleistocene) to the Lujanian (Upper Pleistocene to Lower Holocene) in Venezuela, Brazil, Bolivia, Uruguay, Argentina, and Chile. A. vetustum is recorded in the Bonaerian (Middle Pleistocene) in Argentina; A. wingei in the Lujanian in Venezuela, Bolivia and Brazil; A. angustidens in the Ensenadan of Bolivia and Argentina; A. bonariense in the Bonaerian and Lujanian of Argentina and A. tarijense in the Bonaerian and Lujanian of Uruguay, Argentina, and Chile. Arctotherium is characterized by ten features: the post palatine margin slightly overpasses the distal end of M2, P1-3 compressed in a triangular arrangement, protocone reduced or absent in P4, length between canine and P4 less than P4 mesio-distal length, metastyle reduced or absent in M1, M2 wider than in other ursids, p4 crown ellipsoidal shaped, m1 trigonid wider than in other ursids, m2 crown kidney shaped, m3 crown sub circulate shaped.
Museo de La Plata
description The systematics, and the geographic and stratigraphic distribution of the South American fossil taxa of Tremarctinae (Carnivora, Ursidae) are reviewed and discussed. New diagnostic characters are proposed, in order to support each taxon. Only one genus (Arctotherium), of the Pleistocene and Lower Holocene of South America, is recognized, with five species: A. vetustum Ameghino, A. wingei Ameghino, A. angustidens Gervais & Ameghino, A. bonariense (Gervais), and A. tarijense Ameghino. Arctotherium is recorded from the Ensenadan (Upper Pliocene to Middle Pleistocene) to the Lujanian (Upper Pleistocene to Lower Holocene) in Venezuela, Brazil, Bolivia, Uruguay, Argentina, and Chile. A. vetustum is recorded in the Bonaerian (Middle Pleistocene) in Argentina; A. wingei in the Lujanian in Venezuela, Bolivia and Brazil; A. angustidens in the Ensenadan of Bolivia and Argentina; A. bonariense in the Bonaerian and Lujanian of Argentina and A. tarijense in the Bonaerian and Lujanian of Uruguay, Argentina, and Chile. Arctotherium is characterized by ten features: the post palatine margin slightly overpasses the distal end of M2, P1-3 compressed in a triangular arrangement, protocone reduced or absent in P4, length between canine and P4 less than P4 mesio-distal length, metastyle reduced or absent in M1, M2 wider than in other ursids, p4 crown ellipsoidal shaped, m1 trigonid wider than in other ursids, m2 crown kidney shaped, m3 crown sub circulate shaped.
publishDate 2004
dc.date.none.fl_str_mv 2004
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
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status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/5359
url http://sedici.unlp.edu.ar/handle/10915/5359
dc.language.none.fl_str_mv spa
language spa
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
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Creative Commons Attribution-NonCommercial 3.0 Unported (CC BY-NC 3.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc/3.0/
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107-133
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repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
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