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 Thomasomys apeco Leo L. and Gardner 1993 Thomasomys apeco Leo L. and Gardner 1993 , Proc. Biol. Soc. Wash., 106: 417 . Type Locality: Perú , San Martín Dept., Parque Nacional Río Abiseo, ca. 25 km NE Pataz, Valle de Los Chochos, 3280 m . Vernacular Names: Apeco Thomasomys . Distribution: Known only from the type locality and vicinity, in upper montane forest, 3250-3380 m , NC Perú . Discussion: The largest living thomasomyine as so far known; differentially compared with T. aureus and Megaoryzomys curioi , an extinct Pleistocene form from the Galapagos Isls.