Anodonta fragilis Lamarck, 1819
Lamarck, 1819. Hist. Natur. Anim. sans Vert. 6: 85, sp. 4.
Type(s): TYPES MNHN_MPL_0035, les lacs de Terre-Nueve [Newfoundland].

Anodonta marginata — Simpson (1900), Simpson (1914), F.C. Baker (1928)
Anodonta (s.s.) marginata — Frierson (1927), Haas (1969)
Anodonta (Pyganodon) cataracta fragilis — R.I. Johnson (1970), Kat (1983)
Anodonta cataracta fragilis — R.I. Johnson (1980), Kat (1983), Kat & Davis (1984), Turgeon et al. (1988)
Anodonta fragilis — Hoeh & Burch (1989)
Pyganodon fragilis — Hoeh (1990), Williams et al. (1993), Hoeh et al. (1995), Hoeh et al. (1996), Turgeon et al. (1998), ... Williams et al. (2017), Krebs et al. (2019), Beauchamp et al. (2020), Graf & Cummings (2021), FMCS (2021)

Anodon flava J.G. Anthony, 1865
J.G. Anthony, 1865. Amer. J. Conch. 1(2): 160, pl. 14, fig. 3.
Type(s): HOLOTYPE MCZ_161866, Michigan.

Anodonta marginata — Simpson (1900), Simpson (1914)
Anodonta (s.s.) marginata — Frierson (1927), Haas (1969)

Anodon glandulosa J.G. Anthony, 1865
J.G. Anthony, 1865. Amer. J. Conch. 1(2): 163, pl. 16, fig. 3.
Type(s): HOLOTYPE MCZ_161869, Shears Lake, Kent Co., Michigan.

Anodonta marginata — Simpson (1900), Simpson (1914)
Anodonta (s.s.) marginata — Frierson (1927), Haas (1969)

Anodon irisans J.G. Anthony, 1865
J.G. Anthony, 1865. Amer. J. Conch. 1(2): 163, pl. 16, fig. 2.
Type(s): HOLOTYPE MCZ_161870, Bostwick’s Lake, Michigan.

Anodonta marginata — Simpson (1900), Simpson (1914), F.C. Baker (1928)
Anodonta (s.s.) marginata — Frierson (1927), Haas (1969)

Anodon pallida J.G. Anthony, 1865
J.G. Anthony, 1865. Amer. J. Conch. 1(2): 162, pl. 15, fig. 3.
Type(s): HOLOTYPE MCZ_161871, Michigan.

Anodonta marginata — Simpson (1900), Simpson (1914)
Anodonta (s.s.) marginata — Frierson (1927), Haas (1969)

Anodonta subcarinata Currier, 1867
Currier, 1867. Amer. J. Conch. 3(2): 113, pl. 6, fig. 5.

Anodonta marginata — Simpson (1900), Simpson (1914)
Anodonta (s.s.) marginata — Frierson (1927), Haas (1969)

Anodon pholadiformis Sowerby, 1870
Sowerby, 1870. Conch. Icon. 17: pl. 27, sp. 106.

Anodonta marginata — Simpson (1900), Simpson (1914)
Anodonta (s.s.) marginata — Frierson (1927), Haas (1969)

Anodonta brooksiana van der Schalie, 1938
van der Schalie, 1938. Ann. Carnegie Mus. 27(12): 167-170, pl. 16.
Type(s): TYPE CM_187, Spout Pond, Arm, Ferryland District, Southern Shore, Newfoundland.

Anodonta (Pyganodon) brooksiana — Haas (1969)
Anodonta cataracta fragilis — R.I. Johnson (1980)
Pyganodon fragilis — Stanton et al. (2012)

Mytilus illitus Lightfoot, 1786
‘S.’ Lightfoot, 1786. Catalogue of the Portland Museum: 163, no 3551. [nomen nudum]

Anodon hordeum Sowerby, 1867
‘Gould’ Sowerby, 1867. Conch. Icon. 17: pl. 18, sp. 66.
(misidentified reference to Anodon horda Gould, 1855; error for Anodon horda Gould, 1855)

Anodonta marginata — Simpson (1900), Simpson (1914)
Anodonta (Lastena) ohiensis-horda — Frierson (1927)
Anodonta (s.s.) marginata — Haas (1969)

Anodon subcylindracea Sowerby, 1867
‘Lea’ Sowerby, 1867. Conch. Icon. 17: pl. 15, fig. 47a. [in part]
(misidentified reference to Anodonta subcylindracea Lea, 1838)

Anodonta marginata — Simpson (1900), Simpson (1914)
Anodonta (s.s.) marginata — Frierson (1927), Haas (1969)

Anodon exilis Sowerby, 1870
‘Lea’ Sowerby, 1870. Conch. Icon. 17: pl. 22, sp. 84.
(misidentified reference to Anodonta exilis Lea, 1838)

Anodonta marginata — Simpson (1900), Simpson (1914)
Anodonta (s.s.) marginata — Frierson (1927)