Distribution. NE & S Venezuela (Orinoco Delta and S of the Orinoco River), the Guianas, N & NC Brazil (along the Amazon River W to Maranhao and S to Para and Mato Grosso states), and into upper Amazon Basin of SW Colombia (N up to Meta and Guainia departments), E Ecuador, and NE & E Peru; its S limit in W Amazonian Brazil is unclear. Additional visual records are described for SE Para State and need to be confirmed. in Megalonychidae

Distribution. NE & S Venezuela (Orinoco Delta and S of the Orinoco River), the Guianas, N & NC Brazil (along the Amazon River W to Maranhao and S to Para and Mato Grosso states), and into upper Amazon Basin of SW Colombia (N up to Meta and Guainia departments), E Ecuador, and NE & E Peru; its S limit in W Amazonian Brazil is unclear. Additional visual records are described for SE Para State and need to be confirmed.