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Data last updated
Thu 18 Dec 2025
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Bivalvia
| ... | Unionoidea
| Unionidae
| Ambleminae
| Popenaiadini
| Nephronaias caldwellii
nominal species Unio caldwellii Lea, 1858
Lea, 1858. Proc. Acad. Nat. Sci. 10: 118.
 Lea, 1860. Jour. Acad. Nat. Sci. 4 [O. 7]: 265 [83], pl. 43, fig. 145.
Type(s): HOLOTYPE (MONOTYPY) USNM_84396, Isthmus of Darien.
= Nephronaias caldwellii Taxonomic Opinions= Nephronaias caldwellii (Lea, 1858) — Cummings et al., 2025 = Barynaias caldwellii (Lea, 1858) — Graf & Cummings, 2021 = Barynaias caldwellii Lea, 1858 — Bogan, 2010 = Barynaias caldwellii (Lea, 1858) — Graf & Cummings, 2007 = Barynaias caldwellii (Lea, 1858) — Haas, 1969 + Elliptio (Nephronaias) averyi (Lea) — Haas, 1929 + Elliptio (Barynaias) averyi (Lea, 1859) — Frierson, 1927 = Nephronaias caldwellii (Lea, 1858) — Simpson, 1914 = Nephronaias caldwellii (Lea, 1858) — Simpson, 1900 = Unio (Arotonaias) caldwellii Lea, 1858 — Martens, 1900 = Unio caldwellii Lea — B.H. Wright, 1888 = Margaron (Unio) caldwellii (Lea) — Lea, 1870 = Unio caldwellii Lea, 1858 — Sowerby, 1868
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