Pygmy marmosets are found around the upper part of this large river's basin
There are several different... [DOC] [TLE] Upper Amazon basin of Peru, Brazil and Bolivia | Ecoregions | WWF [PAR] This ecoregion located in the Upper Amazon Basin, is characterized by a 
relatively ... and (2) Ucayali sub-basins drain into the Upper Amazon River in 
Peru; (3) the Acre ... Pygmy marmosets (Cebuella pygmaea), Goeldi marmosets (
Callimico ... lowland forest in southern Peru, a large part of which falls into this 
ecoregion.