Order Rodentia - Family Cricetidae Author Wilson, Don E. Author Reeder, DeeAnn text 2005 The Johns Hopkins University Press Baltimore Mammal Species of the World: a Taxonomic and Geographic Reference (3 rd Edition), Volume 2 955 1189 book chapter 0-8018-8221-4 10.5281/zenodo.7316535 Oxymycterus amazonicus Hershkovitz 1994 Oxymycterus amazonicus Hershkovitz 1994 , Fieldiana Zool., n. s., 79: 23 . Type Locality: Brazil , Pará State, right bank lower Rio Tapajós, Fordlândia; 03º40′S , 55º30′W . Vernacular Names: Amazonian Hocicudo . Distribution: Lower Amazon Basin, south of the Rio Amazonas between the Rios Tocantins and Madeira, C Brazil , as least as far south as NW Mato Grosso (per additional localities reported by Musser et al., 1998:239). Discussion: Considered a small size-class species, principally compared with O. nasutus ; sister species to O. delator according to phylogenetic analysis of cytochrome b data ( Hoffmann et al., 2002 ).