tortuosus, Parodon Eigenmann [C. H.] & Norris [A. A.] 1900:356 [Revista do Museu Paulista v. 4; ref. 1264] Rio Tietê, upper Paraná basin, São Paulo, Brazil. Holotype (unique): CAS 6762 [ex IU 9312]. •Valid as Parodon tortuosus Eigenmann & Norris 1900 -- (Jesus & Moreira-Filho 2000:75 [ref. 24467], López et al. 2003:10 [ref. 27366]). •Valid as Parodon tortuosus Eigenmann & Norris 1900, subspecies tortuosus -- (Menni 2004:72 [ref. 28131]). •Synonym of Parodon nasus Kner 1859 -- (Pavanelli in Reis et al. 2003:48 [ref. 27061], Bellafronte et al. 2005:710 [ref. 28677], Koerber 2014:1 [ref. 33621], Mirande & Koerber 2015:11 [ref. 35117], Koerber et al. 2017:13 [ref. 35267]). Current status: Synonym of Parodon nasus Kner 1859. Parodontidae. Habitat: freshwater.