A Blancan (Pliocene) short-faced bear from El Salvador and its implications for Tremarctines in South America

Autores
Tartarini, V. B.; Huziel Aguilar, D.; Romero, M. R.; Soibelzon, Leopoldo Héctor
Año de publicación
2008
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We present here a deciduous tooth recovered from the Blancan (Pliocene) Río Tomayate locality (Republic of El Salvador) and assign it to cf. Arctotherium (South American short-faced bears) based on its morphology and size. Carnivores, like many other taxa, entered South America from North America during the “Great American Biotic Interchange” (GABI). We think that this individual was part of the stock that entered South America and may have been ancestral to later Arctotherium species. It has been postulated that Arctodus and Arctotherium are sister groups that make up the “short-faced bears clade”. Until now, Arctotherium had only been recorded in South America; the oldest record corresponds to Arctotherium angustidens from the Ensenadan (Early to Middle Pleistocene) of the Pampean Region of Argentina; 5200 km from the Panamian Isthmus. Among Ensenadan sediments the oldest ones are those of “las toscas del Río de La Plata” locality (Pampean Region). The age of these sediments is 1Ma and they correspond to Chron C1r2r. In the northern portion of South America (Venezuela) Arctotherium specimens are only recorded from the Late Pleistocene. Thus, the new specimen provides the earliest record of Arctotherium, extends the distribution of this taxon to Central America and may represent the basal stock for short-faced bears in South America
Museo de La Plata
Materia
Paleontología
Ciencias Naturales
tremarctinae; arctotherium; Pliocene
Diente
oso
El Salvador
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:10915/5361

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spelling A Blancan (Pliocene) short-faced bear from El Salvador and its implications for Tremarctines in South AmericaTartarini, V. B.Huziel Aguilar, D.Romero, M. R.Soibelzon, Leopoldo HéctorPaleontologíaCiencias Naturalestremarctinae; arctotherium; PlioceneDienteosoEl SalvadorUrsidaeWe present here a deciduous tooth recovered from the Blancan (Pliocene) Río Tomayate locality (Republic of El Salvador) and assign it to cf. Arctotherium (South American short-faced bears) based on its morphology and size. Carnivores, like many other taxa, entered South America from North America during the “Great American Biotic Interchange” (GABI). We think that this individual was part of the stock that entered South America and may have been ancestral to later Arctotherium species. It has been postulated that Arctodus and Arctotherium are sister groups that make up the “short-faced bears clade”. Until now, Arctotherium had only been recorded in South America; the oldest record corresponds to Arctotherium angustidens from the Ensenadan (Early to Middle Pleistocene) of the Pampean Region of Argentina; 5200 km from the Panamian Isthmus. Among Ensenadan sediments the oldest ones are those of “las toscas del Río de La Plata” locality (Pampean Region). The age of these sediments is 1Ma and they correspond to Chron C1r2r. In the northern portion of South America (Venezuela) Arctotherium specimens are only recorded from the Late Pleistocene. Thus, the new specimen provides the earliest record of Arctotherium, extends the distribution of this taxon to Central America and may represent the basal stock for short-faced bears in South AmericaMuseo de La Plata2008info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf1-8http://sedici.unlp.edu.ar/handle/10915/5361enginfo: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:10915/5361Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-03 10:22:27.272SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv A Blancan (Pliocene) short-faced bear from El Salvador and its implications for Tremarctines in South America
title A Blancan (Pliocene) short-faced bear from El Salvador and its implications for Tremarctines in South America
spellingShingle A Blancan (Pliocene) short-faced bear from El Salvador and its implications for Tremarctines in South America
Tartarini, V. B.
Paleontología
Ciencias Naturales
tremarctinae; arctotherium; Pliocene
Diente
oso
El Salvador
Ursidae
title_short A Blancan (Pliocene) short-faced bear from El Salvador and its implications for Tremarctines in South America
title_full A Blancan (Pliocene) short-faced bear from El Salvador and its implications for Tremarctines in South America
title_fullStr A Blancan (Pliocene) short-faced bear from El Salvador and its implications for Tremarctines in South America
title_full_unstemmed A Blancan (Pliocene) short-faced bear from El Salvador and its implications for Tremarctines in South America
title_sort A Blancan (Pliocene) short-faced bear from El Salvador and its implications for Tremarctines in South America
dc.creator.none.fl_str_mv Tartarini, V. B.
Huziel Aguilar, D.
Romero, M. R.
Soibelzon, Leopoldo Héctor
author Tartarini, V. B.
author_facet Tartarini, V. B.
Huziel Aguilar, D.
Romero, M. R.
Soibelzon, Leopoldo Héctor
author_role author
author2 Huziel Aguilar, D.
Romero, M. R.
Soibelzon, Leopoldo Héctor
author2_role author
author
author
dc.subject.none.fl_str_mv Paleontología
Ciencias Naturales
tremarctinae; arctotherium; Pliocene
Diente
oso
El Salvador
Ursidae
topic Paleontología
Ciencias Naturales
tremarctinae; arctotherium; Pliocene
Diente
oso
El Salvador
Ursidae
dc.description.none.fl_txt_mv We present here a deciduous tooth recovered from the Blancan (Pliocene) Río Tomayate locality (Republic of El Salvador) and assign it to cf. Arctotherium (South American short-faced bears) based on its morphology and size. Carnivores, like many other taxa, entered South America from North America during the “Great American Biotic Interchange” (GABI). We think that this individual was part of the stock that entered South America and may have been ancestral to later Arctotherium species. It has been postulated that Arctodus and Arctotherium are sister groups that make up the “short-faced bears clade”. Until now, Arctotherium had only been recorded in South America; the oldest record corresponds to Arctotherium angustidens from the Ensenadan (Early to Middle Pleistocene) of the Pampean Region of Argentina; 5200 km from the Panamian Isthmus. Among Ensenadan sediments the oldest ones are those of “las toscas del Río de La Plata” locality (Pampean Region). The age of these sediments is 1Ma and they correspond to Chron C1r2r. In the northern portion of South America (Venezuela) Arctotherium specimens are only recorded from the Late Pleistocene. Thus, the new specimen provides the earliest record of Arctotherium, extends the distribution of this taxon to Central America and may represent the basal stock for short-faced bears in South America
Museo de La Plata
description We present here a deciduous tooth recovered from the Blancan (Pliocene) Río Tomayate locality (Republic of El Salvador) and assign it to cf. Arctotherium (South American short-faced bears) based on its morphology and size. Carnivores, like many other taxa, entered South America from North America during the “Great American Biotic Interchange” (GABI). We think that this individual was part of the stock that entered South America and may have been ancestral to later Arctotherium species. It has been postulated that Arctodus and Arctotherium are sister groups that make up the “short-faced bears clade”. Until now, Arctotherium had only been recorded in South America; the oldest record corresponds to Arctotherium angustidens from the Ensenadan (Early to Middle Pleistocene) of the Pampean Region of Argentina; 5200 km from the Panamian Isthmus. Among Ensenadan sediments the oldest ones are those of “las toscas del Río de La Plata” locality (Pampean Region). The age of these sediments is 1Ma and they correspond to Chron C1r2r. In the northern portion of South America (Venezuela) Arctotherium specimens are only recorded from the Late Pleistocene. Thus, the new specimen provides the earliest record of Arctotherium, extends the distribution of this taxon to Central America and may represent the basal stock for short-faced bears in South America
publishDate 2008
dc.date.none.fl_str_mv 2008
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dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/5361
url http://sedici.unlp.edu.ar/handle/10915/5361
dc.language.none.fl_str_mv eng
language eng
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/
Creative Commons Attribution-NonCommercial 3.0 Unported (CC BY-NC 3.0)
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1-8
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