Zaher, H. et al. 2009. Molecular phylogeny of advanced snakes (Serpentes, Caenophidia) with an emphasis on South American Xenodontines: a revised classification and descriptions of new taxa . Papéis Avulsos de Zoologia. 49, 11 (Jan. 2009), 115–153. DOI:https://doi.org/10.1590/S0031-10492009001100001.