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 Oryzomys dimidiatus Thomas 1905 Oryzomys dimidiatus Thomas 1905 , Ann. Mag. Nat. Hist., ser. 7, 15: 586 . Type Locality: Nicaragua , Zelaya Dept., Río Escondido, 7 mi ( 11 km ) below Rama. Vernacular Names: Nicaraguan Oryzomys . Distribution: SE Nicaragua . Conservation: IUCN – Lower Risk (nt). Discussion: Described as a species of Nectomys and included therein as incertae sedis by Hershkovitz (1944) . Later designated as the type species of Micronectomys , subgenus Oryzomys , by Hershkovitz (1948b) , who afterwards (1970) acknowledged the taxon as a nomen nudum (also see Pine and Wetzel, 1975:653 ). Morphological features resemble those of the O. couesi-palustris complex (Hershkovitz, 1970), a relationship supported by Sánchez et al. (2001). Only two specimens known (see Jones and Engstrom, 1986 ).