1.
Moraes-Da-Silva A, Amaro RC, Nunes PMS, Rodrigues MT, Curcio FF. Long known, brand new, and possibly threatened: a new species of watersnake of the genus Helicops Wagler, 1828 (Serpentes; Xenodontinae) from the Tocantins-Araguaia River Basin, Brazil. Zootaxa [Internet]. 2021 Jan. 7 [cited 2025 May 2];4903(2):217–241. Available from: https://www.mapress.com/zt/article/view/zootaxa.4903.2.3