nasus, Parodon Kner [R.] 1859:167 [31], Pl. 7 [not 8] (fig. 17) [Denkschriften der Kaiserlichen Akademie der Wissenschaften in Wien, Mathematisch-Naturwissenschaftliche Classe. v. 17; ref. 2631] Rio Cuiabá, Brazil. Syntypes: NMW 56545 (2). On p. 31 of separate. •Valid as Parodon nasus Kner 1859 -- (Britski et al. 1999:70 [ref. 24147], Pavanelli in Reis et al. 2003:48 [ref. 27061], Bellafronte et al. 2005:710 [ref. 28677], Koerber 2011:1 [ref. 31122], Londoño-Burbano et al. 2011:728 [ref. 31702], Koerber 2014:1 [ref. 33621] not in Argentina, Mirande & Koerber 2015:11 [ref. 35117], Koerber et al. 2017:13 [ref. 35267], Azevedo-Santos et al. 2020:5 [ref. 39606], Reis et al. 2020:462 [ref. 38364]). Current status: Valid as Parodon nasus Kner 1859. Parodontidae. Distribution: South America: La Plata River basin (Argentina, Brazil and Paraguay). Habitat: freshwater.