Nayadina de Gregorio, 1914
de Gregorio, 1914, Il Nat. Siciliano 2: 64.
(homonym of Munier-Chalmas, 1864 [Mallaeidae]; intro'd as sub-gen. of Anodonta Lamarck, 1799)
Type species: Anodonta (Nayadina) venusta de Gregorio, 1914 (monotypy) = Utterbackiana suborbiculata

Utterbackiana Frierson, 1927
Frierson, 1927, Check List N. Amer. Naiades: 17.
(intro'd as sub-gen. of Anodonta Lamarck, 1799)
Type species: Anodonta suborbiculata Say, 1831 (orig. desig.) = Utterbackiana suborbiculata

Nayadina Haas, 1969
‘de Gregorio’ Haas, 1969, Das Tierreich 88: 359.
(reference to Nayadina de Gregorio, 1914)
Type species: Anodonta suborbiculata Say, 1831 ([see comments]) = Utterbackiana suborbiculata

Taxonomic History (since 1900)

Anodonta — Simpson (1900), Ortmann (1909), Simpson (1914), Thiele (1934), ..., Pfeiffer et al. (2016), Marshall et al. (2018), Smith et al. (2018), Whelan et al. (2023)
Unio (Anodonta) — Call (1900)
Anodonta (Nayadina) — de Gregorio (1914), Haas (1969)
— de Gregorio (1914)
Lastena — Utterback (1915), Modell (1945)
Anodonta (Pyganodon) — Frierson (1927), Haas (1969), R.I. Johnson (1970), Kat (1983)
Anodonta (Lastena) — Frierson (1927), Haas (1969)
Anodonta (Utterbackiana) — Frierson (1927), Haas (1969)
Pyganodon — Modell (1945), Graf & Cummings (2007), Watters et al. (2009), Cummings & Graf (2010), Jones (2015)
Utterbackiana — Modell (1945), Williams et al. (2017), Graf & Cummings (2021), FMCS (2021), Bieler (2021), Hopper et al. (2023), Whelan et al. (2023)
Anodonta (Utterbackia) — R.I. Johnson (1970), R.I. Johnson (1972), Heard (1975), R.I. Johnson (1980), Kat (1983)
Utterbackia — Graf & Cummings (2007), Cummings & Graf (2010)