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Data last updated
Thu 18 Dec 2025
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Bivalvia
| ... | Unionidae
| Unioninae
| Anodontini
| Alasmidontina
| Utterbackia imbecillis
nominal species Utterbackia imbecillis fusca F.C. Baker, 1927
 Utterbackia imbecillis fusca F.C. Baker, 1927 = Utterbackia imbecillis
F.C. Baker, 1927. Amer. Midl. Nat. 10(7): 222.
F.C. Baker, 1928. Bull. Wisconsin Geol. Nat. Hist. Survey 70(2): 175, pl. 103, figs. 12-14.
(intro'd as intra-sp. of Anodonta imbecillis Say, 1829)
Type(s): HOLOTYPE (ORIG. DESIG.) UMMZ_209141, Sturgeon Bay, Wisc.
= Utterbackia imbecillis Taxonomic Opinions+ Utterbackia imbecillis (Say, 1829) — Watters et al., 2009 + Utterbackia imbecillis (Say, 1829) — Williams et al., 2008 + Utterbackia imbecillis (Say, 1829) — Parmalee & Bogan, 1998 + Anodonta imbecillis Say, 1829 — R.I. Johnson, 1980 + Anodonta (Utterbackia) imbecilis [sic] Say, 1829 — R.I. Johnson, 1970 = Utterbackia imbecillis fusca Baker, F.C., 1927 — F.C. Baker, 1928 = Utterbackia imbecillis fusca Var. Nov. — F.C. Baker, 1927
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