I have publish a paper about this
Iberê Farina Machado, Leonardo Moreira Bairos Felipe, Roger Borges da Silva et al. (2010) Amphibia, Anura, Centrolenidae, Vitreorana uranoscopa ( Müller , 1924 ): Distribution extension in the state of Rio Grande do Sul , Brazil, 410-411. In Checklist 6 (3).
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