Order Rodentia - Family Echimyidae 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 1575 1592 book chapter 0-8018-8221-4 10.5281/zenodo.7316535 Proechimys gardneri da Silva 1998 Proechimys gardneri da Silva 1998 , Proc. Biol. Soc. Wash., 111: 460 . Type Locality: Brazil , Amazonas , Altamira, right bank Rio Juruá ( 68 ^o 54’W , 06 ^o 35’S ) . Vernacular Names: Gardner's Spiny-rat . Distribution: W Amazonia of Brazil and N Boliva between the Rio Juruá and the Rio Madeira. Discussion: Weksler et al. (2001) erroneously cited Patton (1987) as placing in guyannensis group; molecular analysis suggests affinities with pattoni and kulinae ( Patton et al., 2000 ) . Karyotype has 2n=40 and FN=56.