The first fossil skull of an anteater (Vermilingua, Myrmecophagidae) from northern South America, a taxonomic reassessment of Neotamandua and a discussion of the myrmecophagid diversification

The evolutionary history of the South American anteaters, Vermilingua, is incompletely known as consequence of the fragmentary and geographically biased nature of the fossil record of this group. The only record of a nominal extinct species for northern South America is Neotamandua borealis, from th...

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Detalles Bibliográficos
Autores principales: Jiménez Lara, Kevin Adolfo, González, Jhon
Formato: Articulo Preprint
Lenguaje:Inglés
Publicado: 2019
Materias:
Paleontología
Vermilingua
Myrmecophagidae
Diversification
Neotamandua
La Venta area
Neogene
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/125341
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-125341
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Paleontología
Vermilingua
Myrmecophagidae
Diversification
Neotamandua
La Venta area
Neogene
spellingShingle Paleontología
Vermilingua
Myrmecophagidae
Diversification
Neotamandua
La Venta area
Neogene
Jiménez Lara, Kevin Adolfo
González, Jhon
The first fossil skull of an anteater (Vermilingua, Myrmecophagidae) from northern South America, a taxonomic reassessment of Neotamandua and a discussion of the myrmecophagid diversification
topic_facet Paleontología
Vermilingua
Myrmecophagidae
Diversification
Neotamandua
La Venta area
Neogene
description The evolutionary history of the South American anteaters, Vermilingua, is incompletely known as consequence of the fragmentary and geographically biased nature of the fossil record of this group. The only record of a nominal extinct species for northern South America is Neotamandua borealis, from the Middle Miocene of La Venta area, southwestern Colombia (Hirschfeld 1976). A new genus and species of myrmecophagid for La Venta is described here from a new partial skull. Additionally, the taxonomic status of the genus to which was referred the co-occurrent species of Gen. et sp. nov., i.e. Neotamandua, is revised. The morphological and taxonomic analyses of these taxa indicate that Gen. et sp. nov. may be related to Tamandua and that the justification of the generic assignments of the referred species to Neotamandua is weak, with high probability of reassigning some of them to a new genus. Two species previously referred to Neotamandua (N. magna and N.? australis) were designated as species inquirendae and new diagnostic information for the redefined genus and its type species, N. conspicua, is provided. Together, these results suggest that the diversification of Myrmecophagidae was taxonomically and biogeographically more complex than that what has been proposed so far. Considering the new evidence, it is proposed a synthetic model on the diversification of these xenartrans during the late Cenozoic based on the probable relationship between their intrinsic ecological constraints and some major abiotic changes in the Americas.
format Articulo
Preprint
author Jiménez Lara, Kevin Adolfo
González, Jhon
author_facet Jiménez Lara, Kevin Adolfo
González, Jhon
author_sort Jiménez Lara, Kevin Adolfo
title The first fossil skull of an anteater (Vermilingua, Myrmecophagidae) from northern South America, a taxonomic reassessment of Neotamandua and a discussion of the myrmecophagid diversification
title_short The first fossil skull of an anteater (Vermilingua, Myrmecophagidae) from northern South America, a taxonomic reassessment of Neotamandua and a discussion of the myrmecophagid diversification
title_full The first fossil skull of an anteater (Vermilingua, Myrmecophagidae) from northern South America, a taxonomic reassessment of Neotamandua and a discussion of the myrmecophagid diversification
title_fullStr The first fossil skull of an anteater (Vermilingua, Myrmecophagidae) from northern South America, a taxonomic reassessment of Neotamandua and a discussion of the myrmecophagid diversification
title_full_unstemmed The first fossil skull of an anteater (Vermilingua, Myrmecophagidae) from northern South America, a taxonomic reassessment of Neotamandua and a discussion of the myrmecophagid diversification
title_sort first fossil skull of an anteater (vermilingua, myrmecophagidae) from northern south america, a taxonomic reassessment of neotamandua and a discussion of the myrmecophagid diversification
publishDate 2019
url http://sedici.unlp.edu.ar/handle/10915/125341
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