Additional file 1.

Extended background, methods and results. It includes a detailed description of the molecular and phylogenetic reconstruction procedures, the taxon sampling strategy followed to assemble the nuclear dataset (with GenBank accession numbers and specimen vouchers), summary of previous hypotheses of phylogenetic relationships of pipids and more detailled information of results (congruent topology of combined nuclear genes, congruence among single nuclear genes and values of AU tests). It also includes an exhaustive description of the vocalizations of Pseudhymenochirus merlini (with sonograms) and anatomical preparations showing larynx structure of P. merlini and other pipids.

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Irisarri et al. BMC Evolutionary Biology 2011 11:114   doi:10.1186/1471-2148-11-114