Earliest South American paucituberculatans and their significance in the understanding of 'pseudodiprotodont' marsupial radiations

We describe the oldest Paucituberculata marsupials, from the La Barda and Las Flores localities (Argentina; Late Palaeocene, and Early-Middle Eocene), as well as from the Itaboraí Basin (Brazil; Late Palaeocene). The new taxa are represented by very scarce, although well-preserved, dental remains. A...

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Detalles Bibliográficos
Autores principales: Goin, Francisco Javier, Candela, Adriana Magdalena, Abello, María Alejandra, Oliveira, Edison V.
Formato: Articulo
Lenguaje:Inglés
Publicado: 2009
Materias:
Ciencias Naturales
Argentina
Brazil
Caenolestidae
Molar morphology
Paleogene
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/82688
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-82688
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Naturales
Argentina
Brazil
Caenolestidae
Molar morphology
Paleogene
spellingShingle Ciencias Naturales
Argentina
Brazil
Caenolestidae
Molar morphology
Paleogene
Goin, Francisco Javier
Candela, Adriana Magdalena
Abello, María Alejandra
Oliveira, Edison V.
Earliest South American paucituberculatans and their significance in the understanding of 'pseudodiprotodont' marsupial radiations
topic_facet Ciencias Naturales
Argentina
Brazil
Caenolestidae
Molar morphology
Paleogene
description We describe the oldest Paucituberculata marsupials, from the La Barda and Las Flores localities (Argentina; Late Palaeocene, and Early-Middle Eocene), as well as from the Itaboraí Basin (Brazil; Late Palaeocene). The new taxa are represented by very scarce, although well-preserved, dental remains. A parsimony analysis was performed in order to evaluate the phylogenetic affinities of these taxa. Representatives of both <i>Riolestes capricornicus</i> gen. et sp. nov. and <i>Bardalestes hunco</i> gen. et sp. nov. appear to be basal paucituberculatans, and their molar features give clues on the early evolution of the representatives of this order. Within the Paucituberculata we recognize two major clades: Caenolestoidea and Palaeothentoidea. We conclude that 'pseudodiprotodont' marsupials of the traditional literature (i.e. Polydolopimorphia + Paucituberculata) do not form a natural group.
format Articulo
Articulo
author Goin, Francisco Javier
Candela, Adriana Magdalena
Abello, María Alejandra
Oliveira, Edison V.
author_facet Goin, Francisco Javier
Candela, Adriana Magdalena
Abello, María Alejandra
Oliveira, Edison V.
author_sort Goin, Francisco Javier
title Earliest South American paucituberculatans and their significance in the understanding of 'pseudodiprotodont' marsupial radiations
title_short Earliest South American paucituberculatans and their significance in the understanding of 'pseudodiprotodont' marsupial radiations
title_full Earliest South American paucituberculatans and their significance in the understanding of 'pseudodiprotodont' marsupial radiations
title_fullStr Earliest South American paucituberculatans and their significance in the understanding of 'pseudodiprotodont' marsupial radiations
title_full_unstemmed Earliest South American paucituberculatans and their significance in the understanding of 'pseudodiprotodont' marsupial radiations
title_sort earliest south american paucituberculatans and their significance in the understanding of 'pseudodiprotodont' marsupial radiations
publishDate 2009
url http://sedici.unlp.edu.ar/handle/10915/82688
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