Order Rodentia - Family Muridae Author Guy G. Musser Author Michael D. Carleton text 1993 Smithsonian Institution Press Washington and London Editor Don E. Wilson Editor DeeAnn M. Reeder Mammal Species of the World (2 nd Edition) 501 755 book chapter http://doi.org/10.5281/zenodo.7353098 1-56098-217-9 7353098 Thomasomys Coues, 1884 . Am. Nat., 18:1275 . TYPE SPECIES: Hesperomys cinereus Thomas, 1882 . SYNONYMS: Erioryzomys, Inomys . COMMENTS: Thomasomyine. A complex genus whose nomenclatural history is intertwined with Aepeomys , Delomys , and Wilfredomys , taxa which have been used as subgenera (e.g., Ellerman, 1941 ; Cabrera, 1961) or as genera (see their accounts). Comparative anatomical studies involving some Thomasomys include Carleton (1973) , Hooper and Musser (1964a) , and Voss and Linzey (1981) ; chromosomal numbers of several species published by Gardner and Patton (1976) . Revisionary studies required to critically overhaul species taxonomy and to place ranking of various genus-group taxa in a phylogenetic context. Species recognized here basically follow Cabrera (1961).