nasutus, Schizodon Kner [R.] 1858:78 [Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften. Mathematisch-Naturwissenschaftliche Classe v. 30 (no. 13); ref. 13404] Irisanga, São Paulo, Brazil. Appeared in more detail in Kner 1859:164, Pl. 6 [ref. 2631]. •Valid as Schizodon nasutus Kner 1858 -- (Garavello & Britski 1990:156 [ref. 23182], Gómez & Chebez 1996:53 [ref. 23791], Miquelarena et al. 1997:69 [ref. 23469], Sverlij et al. 1998:28 [ref. 27632] dated 1859, Garavello & Britski in Reis et al. 2003:80 [ref. 27061], López et al. 2003:15 [ref. 27366], Menni 2004:72 [ref. 28131], Sidlauskas et al. 2007:723 [ref. 29265], Litz & Koerber 2014:8 [ref. 33622], Mirande & Koerber 2015:13 [ref. 35117], Bertaco et al. 2016:411 [ref. 34561], Koerber et al. 2017:19 [ref. 35267], Azevedo-Santos et al. 2020:5 [ref. 39606], Ramírez et al. 2020:[6] [ref. 37803], Reis et al. 2020:457 [ref. 38364], Brandão et al. 2023:71 [ref. 40464], Loureiro et al. 2023:42 [ref. 40506], Birindelli 2024:67 [ref. 40817]). Current status: Valid as Schizodon nasutus Kner 1858. Anostomidae. Distribution: South America: upper Paraná and upper Uruguay River basins (Argentina, Uruguay, Paraguay and Brazil). Habitat: freshwater.