TY - JOUR T1 - Scale by scale, river by river: On the taxonomy, osteology and distribution of the Amazonian snake Helicops acangussu JO - Acta Amazonica A1 - CITELI, Nathalie A1 - KLACZKO, Julia A1 - MARTINS, Angele R. A1 - CAICEDO PORTILLA, José Rancés A1 - SILVEIRA, Alessandra A1 - LOPES, Ricardo Tadeu A1 - BRANDÃO, Reuber A. SN - 0044-5967 UL - 10.1590/1809-4392202400641 VL - 55 Y1 - 2025 PB - Brasil ER -