Taxonomic status and the phylogenetic placement of Amphisbaena leucocephala Peters, 1878 (Squamata, Amphisbaenidae) - Dal Vechio, Francisco; Teixeira Jr., Mauro; Sena, Marcelo; Argôlo, Antônio; Garcia, Caroline; Rodrigues, Miguel Trefaut (South American Journal of Herpetology, 2016)