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Data last updated
Mon 1 Dec 2025
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Bivalvia
| ... | Unionoidea
| Unionidae
| Ambleminae
| Popenaiadini
| Psoronaias crocodilorum
nominal species Quadrula rudis Simpson, 1900
 Simpson, 1900. Proc. Acad. Nat. Sci. 52: 82, pl. 3, fig. 2.
Simpson, 1914. Descr. Cat. Naiades: 910.
Type(s): HOLOTYPE (MONOTYPY) USNM_84210, Rio Taxtunilha, (tributary to the Rio de la Pasion), Guatemala.
= Psoronaias crocodilorum Taxonomic Opinions= Psorula rudis (Simpson, 1900) — Freeman et al., 2025 + Psoronaias crocodilorum (Morelet, 1849) — Cummings et al., 2025 + Psoronaias semigranosa (von dem Busch in Philippi, 1843) — Graf & Cummings, 2021 = Psorula rudis — Inoue et al., 2020 = Psorula rudis (Simpson, 1914) — Pfeiffer et al., 2019 = Psorula rudis Simpson, 1900 — Bogan, 2010 = Psorula rudis (Simpson, 1900) — Graf & Cummings, 2007 = Psorula rudis (Simpson, 1900) — Haas, 1969 + Psoronaias semigranosus (von dem Busch, 1845) — Goodrich & van der Schalie, 1937 = Amblema (sec. Psorula) rudis (Simpson) — Thiele, 1934 = Amblema (Psorula) rudis (Simpson) — Haas, 1930 = Rotundaria rudis (Simpson) — Haas, 1929 = Psoronaias rudis (Simpson, 1900) — Frierson, 1927 = Quadrula (Rotundaria) rudis Simpson, 1900 — Simpson, 1914 + — Simpson, 1900 = Quadrula rudis Simpson — Simpson, 1900 = Unio (Psoronaias) crocodilorum var. rudis Simpson, 1900 — Martens, 1900
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