TY - JOUR T1 - Thaptomys Thomas 1915 (Rodentia, Sigmodontinae, Akodontini) with karyotypes 2n = 50, FN = 48, and 2n = 52, FN = 52: two monophyletic lineages recovered by molecular phylogeny JO - Genetics and Molecular Biology A1 - Ventura, Karen A1 - Silva, Maria José de Jesus A1 - Yonenaga-Yassuda, Yatiyo SN - 1415-4757 UL - 10.1590/S1415-47572010005000053 VL - 33 Y1 - 2010 PB - Brazil ER -