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Abstract
We describe an incomplete trunk vertebra of a snake attributable to the Viperidae, collected from a conglomerate facies in upper Pleistocene sediments at the Mississippi locality, Upper Juruá River, southwestern Brazilian Amazonia. It represents the first fossil snake record from the Pleistocene of this region. This specimen extends the fossil distribution of the Viperidae, representing the northernmost record of a snake in the Brazilian Pleistocene.
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Acknowledgements
The authors thank CNPq (Conselho Nacional de Desenvolvimento Cientifico e Tecnológico) for financial support to ASH for research at Universidade Federal do Rio Grande do Sul (PPGGeociências/UFRGS). Thanks are also due to K.A. Rodrigues (UFAC/Cruzeiro do Sul) for the loan of fossil snake material; to M.L. Araújo, M.L.M. Alves (MCN/FZBRS) and G.F. Pontes (MCT-PUCRS) for the loan or donation of the colubroid specimens; and to J.C. Cisneros (UFPI) and M. Santos (UFRGS) for English revision of the manuscript. We also thank Dr Stephen McLoughlin, Editor in Chief, and two anonymous reviewers for their constructive comments.