Bivalvia | Unionida | Unionoidea | Unionidae | Ambleminae | Lampsilini | Ortmanniana
19 available nominal species synonyms (29 total synonyms)
Actinonaias ligamentina — Graf & Cummings (2007), Williams et al. (2008), Chapman et al. (2008), Elderkin et al. (2008), Chapman et al. (2008), ... Gasparini et al. (2020), FMCS (2021), Walters et al. (2021), Jeratthitikul et al. (2022), Hopper et al. (2023)
Sphenonaias callosa — Graf & Cummings (2007), Graf & Cummings (2021)
Actinonaias ligamentina ligamentina — Watters et al. (2009)
Actinonaias ligamentina carinata — Watters et al. (2009)
Actinonaias carinata — Jadhav & Jamkhedkar (2009), Hoeh et al. (2009)
Actinonaias carinata carinata — ITIS (2012)
Actinonaias carinata gibba — ITIS (2012)
Ortmanniana ligamentina — Pfeiffer et al. (2019), Lor et al. (2020), Graf & Cummings (2021), Stodola et al. (2021), Layer et al. (2022), FMCS (2025)
Ortmanniana (Actinonaias) ligamentina — Porto-Hannes et al. (2021)
Widespread in the Interior and Great Lakes basins, North America.

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UMMZ_265715. (28S: DQ191420, COI: AF156517, go to Genbank) Cannon River, Fairbault, MN.
UA_1941. (28S: MK036068, 5.8S: MK036152, COI: MK044901, ITS1: MK036152, ND1: MK045051, go to Genbank) Green River, Ohio drainage (37.17, -85.89).
UAUC_241. (16S: AY655027, ND1: AY655085, go to Genbank) Kankakee River, Aroma Park, T30N R13W Sec 23, Kankakee Co. IL.