New toxodontid (Notoungulata) from the Early Miocene of Mendoza, Argentina

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We describe a new toxodontid species, Nesodon taweretus sp. nov., from the Aisol Formation in Mendoza Province, central-west Argentina. Nesodon is a frequently found Toxodontidae, member of the Notoungulata, an extinct endemic group of Cenozoic South American mammals that are ecologically similar to...

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Detalles Bibliográficos
Autores principales: Forasiepi, Analía M., Cerdenño, Esperanza, Bond, Mariano, Schmidt, Gabriela I., Naipauer, Maximiliano, Straehl, Fiona R., Martinelli, Agustín G., Garrido, Alberto C., Schmitz, Mark D., Crowley, James L.
Formato: Articulo
Lenguaje:Inglés
Publicado: 2015
Materias:
Paleontología
Nesodon
South America
Cenozoic
Early Miocene
U–Pb (CA-ID-TIMS) tuff age
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/127531
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-127531
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Paleontología
Nesodon
South America
Cenozoic
Early Miocene
U–Pb (CA-ID-TIMS) tuff age
spellingShingle Paleontología
Nesodon
South America
Cenozoic
Early Miocene
U–Pb (CA-ID-TIMS) tuff age
Forasiepi, Analía M.
Cerdenño, Esperanza
Bond, Mariano
Schmidt, Gabriela I.
Naipauer, Maximiliano
Straehl, Fiona R.
Martinelli, Agustín G.
Garrido, Alberto C.
Schmitz, Mark D.
Crowley, James L.
New toxodontid (Notoungulata) from the Early Miocene of Mendoza, Argentina
topic_facet Paleontología
Nesodon
South America
Cenozoic
Early Miocene
U–Pb (CA-ID-TIMS) tuff age
description We describe a new toxodontid species, Nesodon taweretus sp. nov., from the Aisol Formation in Mendoza Province, central-west Argentina. Nesodon is a frequently found Toxodontidae, member of the Notoungulata, an extinct endemic group of Cenozoic South American mammals that are ecologically similar to current hoofed ungulates. The holotype of N. taweretus sp. nov. is a skull, and we tentatively assign some mandibular fragments and postcranial bones. N. taweretus sp. nov. differs from the other Nesodon species in several cranial and dental features, and close comparisons were made with the Patagonian Nesodon imbricatus, common in the Santa Cruz Formation (Santacrucian Age, Early Miocene). The material is of a similar size to N. imbricatus, with a body mass estimation of about 550 kg. The phylogenetic analysis groups N. taweretus sp. nov. with other species of Nesodon. The absolute age of the Aisol Formation has been established at ca 19.480 ± 0.025 Ma (Burdigalian; Early Miocene) by means of U–Pb zircon dating. The vertebrate association is encompassed by the Santacrucian Age. Latitudinal separation between Mendoza and Patagonia in the south would have favored taxonomic differences, as reflected in the species of Nesodon.
format Articulo
Articulo
author Forasiepi, Analía M.
Cerdenño, Esperanza
Bond, Mariano
Schmidt, Gabriela I.
Naipauer, Maximiliano
Straehl, Fiona R.
Martinelli, Agustín G.
Garrido, Alberto C.
Schmitz, Mark D.
Crowley, James L.
author_facet Forasiepi, Analía M.
Cerdenño, Esperanza
Bond, Mariano
Schmidt, Gabriela I.
Naipauer, Maximiliano
Straehl, Fiona R.
Martinelli, Agustín G.
Garrido, Alberto C.
Schmitz, Mark D.
Crowley, James L.
author_sort Forasiepi, Analía M.
title New toxodontid (Notoungulata) from the Early Miocene of Mendoza, Argentina
title_short New toxodontid (Notoungulata) from the Early Miocene of Mendoza, Argentina
title_full New toxodontid (Notoungulata) from the Early Miocene of Mendoza, Argentina
title_fullStr New toxodontid (Notoungulata) from the Early Miocene of Mendoza, Argentina
title_full_unstemmed New toxodontid (Notoungulata) from the Early Miocene of Mendoza, Argentina
title_sort new toxodontid (notoungulata) from the early miocene of mendoza, argentina
publishDate 2015
url http://sedici.unlp.edu.ar/handle/10915/127531
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