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https://locus.ufv.br//handle/123456789/13845
Tipo: | Artigo |
Título: | Atolchelys lepida, a new side-necked turtle from the Early Cretaceous of Brazil and the age of crown Pleurodira |
Autor(es): | Romano, Pedro S. R. Gallo, Valeria Ramos, Renato R. C. Antonioli, Luzia |
Abstract: | We report a new pleurodiran turtle from the Barremian Morro do Chaves Formation, Sergipe-Alagoas Basin, Brazil. We tested the phylogenetic position of Atolchelys lepida gen. et sp. nov. by including it in a comprehensive cladistic analysis of pleurodires. The new species is a basal member of Bothremydidae and simultaneously the oldest unambiguous crown Pleurodira. The biogeographic and chronostratigraphic significance of the finding has implications for the calibration of molecular clocks studies by pushing back the minimum age of crown Pleurodira by more than 12 Ma (ca 125 Ma). The reanalysis of Pelomedusoides relationships provides evidence that the early evolution and relationships among the main lineages of side-necked turtles can be explained, at least partially, by a sequence of vicariance events. |
Palavras-chave: | Testudines Phylogeny Morro do Chaves Formation Northeastern Brazil Barremian |
Editor: | Biology Letters |
Tipo de Acesso: | Open Access |
URI: | http://dx.doi.org/10.1098/rsbl.2014.0290 http://www.locus.ufv.br/handle/123456789/13845 |
Data do documento: | 8-Jul-2014 |
Aparece nas coleções: | Artigos |
Arquivos associados a este item:
Arquivo | Descrição | Tamanho | Formato | |
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20140290.full.pdf | texto completo | 660,6 kB | Adobe PDF | Visualizar/Abrir |
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