Unionoida | Unionoidea | Unionidae | Ambleminae | Popenaiadini | Nephronaias sphenorhyncha nominal species Unio sphenorhynchus Crosse & Fischer, 1894
Crosse & Fischer, 1894, J. de Conch. 41: 296.
Fischer & Crosse, 1894, Miss. Sci. Mexique, Rech. Zool. 2(16): 617, pl. 66, fig. 2-2a.
Type(s): SYNTYPE MNHN-IM-2000-1792, Mexique.
= Nephronaias sphenorhyncha Taxonomic Opinions
= Nephronaias sphenorhyncha (Crosse y Fischer, 1893) — Czaja et al., 2023
= Nephronaias sphenorhyncha (Crosse & Fischer, 1893) — Graf & Cummings, 2021
= Nephronaias sphenorhyncha Crosse & Fischer, 1893 — Bogan, 2010
= Nephronaias sphenorhyncha (Crosse & Fischer, 1893) — Graf & Cummings, 2007
= Nephronaias (s.s.) sphenorhynchus (Crosse & Fischer, 1893) — Haas, 1969
= Elliptio (Nephronaias) sphenorhynchus (Crosse & Fischer) — Haas, 1929
= Elliptio (Nephronaias) sphenorhynchus (Crosse & Fischer, 1893) — Frierson, 1927
= Unio (sec. Elliptio) sphenorhynchus Crosse & Fischer, 1893 — Simpson, 1914
= Unio (sec. Elliptio) sphenorhynchus Crosse & Fischer, 1893 — Simpson, 1900
+ Unio (Sphenonaias) acutirostris Lea, 1866 — Martens, 1900
= Unio (Sphenonaias) sphenorhynchus Crosse & Fischer, 1893 — Fischer & Crosse, 1894
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