Genetic distances and phylogenetic analysis suggest that Baillonius Cassin, 1867 is a Pteroglossus Illiger, 1811 (Piciformes: Ramphastidae) - Kimura, Renato Kenji; Pereira, Sérgio Luiz; Grau, Erwin Tramontini; Hofling, Elizabeth; Wajntal, Anita (Ornitologia Neotropical, 2004)