Data/hora: 09/06/2024 09:35:11

Provedor de dados: | 42
País: | Brazil
Título: | The Dasypodidae (Mammalia, Xenarthra) from the Urso Fóssil Cave (Quaternary), Parque Nacional de Ubajara, State of Ceará, Brazil: paleoecological and taxonomic aspects
Autores: | OLIVEIRA,PAULO V.; RIBEIRO,ANA MARIA; OLIVEIRA,ÉDISON V.; VIANA,MARIA SOMÁLIA S.
Data: | 2014-03-01
Ano: | 2014
Palavras-chave: | Mammals; Dasypodidae; Holocene; Cave; Parque Nacional de Ubajara; Northeastern Brazil.
Resumo: | This paper deals with xenarthrans osteoderms assigned toDasypus aff. D. novemcinctus,Euphractus sexcinctus and Cabassous sp. The material was collected in subsurface, from 0.10 to 0.60 m in the Urso Fóssil Cave, Parque Nacional de Ubajara, State of Ceará, northeastern Brazil. The ages of sediment samples from levels 4 and 5 (depths of 0.40 and 0.50 m) were determined by thermoluminescence technique, and indicated ages of 8,000 and 8,200 years BP for each layer respectively. The presence in these layers of early Holocene xenarthrans taxa can contribute to the understanding of the biotic evolution of the northwest region of Ceará during the last 10,000 years. Two of the three identified taxa still occur in the region: Dasypus novemcinctus andEuphractus sexcinctus. The Dasypodidae fauna here reported includes animals with generalist feeding habits and current wide geographical distribution. It is suggested, therefore, that the climatic and environmental conditions in the early Holocene were very similar the actual ones, and that the absence of Cabassous may be conditioned to other factors, such as anthropogenic action and loss of habitat by fragmentation of the vegetation.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000100147
Editor: | Academia Brasileira de Ciências
Relação: | 10.1590/0001-3765201420120029
Formato: | text/html
Fonte: | Anais da Academia Brasileira de Ciências  v.86 n.1 2014
Fonte: | info:eu-repo/semantics/openAccess