Unionoida | Unionoidea | Unionidae | Ambleminae | Popenaiadini | Psoronaias semigranosa nominal species Unio crocodilorum var. B semipustulata Fischer & Crosse, 1894
Fischer & Crosse, 1894, Miss. Sci. Mexique, Rech. Zool. 2(16): 578, pl. 60, fig. 4.
(intro'd as intra-sp. of Unio crocodilorum Morelet, 1849)
Type(s): PARATYPES BMNH_1893-2-4-2032, River Usumacinta, Guatemala.
= Psoronaias semigranosa Taxonomic Opinions
+ Psoronaias crocodilorum (Morelet, 1849) — Haas, 1969
+ Psoronaias crocodilarum [sic] (Morelet) — Haas, 1929
+ Psoronaias crocodilorum (Morelet, 1849) — Frierson, 1927
+ Unio (Psoronaias) crocodilorum Morelet, 1849 — Martens, 1900
= Unio (Psoronaias) crocodilorum var. B, semipustulata — Fischer & Crosse, 1894
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