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 Trinomys yonenagae Rocha 1995 Trinomys yonenagae Rocha 1995 , Mammalia , 59 (4): 541 . Type Locality: Brazil , Bahia , Ibiraba ( 10 ^o 48’S , 42 ^o 50’W ) . Vernacular Names: Yonenaga's Atlantic Spiny-rat . Distribution: Left bank of the São Francisco River from Bara to Pilão Arcado (NE Brazil ). Discussion: Karyotype has 2n=54 and FN=108 (Leal-Mesquinta et al., 1992).