 Remains of Nesomys narindaensis were found during fieldwork in northwestern Madagascar that started in 2001 . The species was described in a 2010 paper by Pierre Mein and colleagues , together with another extinct rodent , Brachytarsomys mahajambaensis . The specific name , narindaensis , where one of the sites where the species has been found is located . It is placed in the genus Nesomys , together with three smaller living species , N. <unk> , N. lambertoni , and N. rufus . Nesomys is classified in the exclusively Madagascan subfamily Nesomyinae of the family Nesomyidae , which includes various African rodents . 
