Unionoida | Hyrioidea | Hyriidae | Hyriinae | Castaliini | Castalia ambigua nominal species Unio ambiguus Sowerby & Sowerby, 1821
‘Lamarck’ Sowerby & Sowerby, 1821, Genera of Shells 2: pl. 85, fig. 2.
(reference to Castalia ambigua Lamarck, 1819)
= Castalia ambigua Taxonomic Opinions
+ Tetraplodon ambiguus Lamarck — Haas, 1916
= Tetraplodon ambiguus (Sowerby, 1823) — Simpson, 1914
= Tetraplodon ambiguus (‘Lamarck’ Sowerby,1823) — Simpson, 1900
+ Margaron (Prisodon) truncatus (Schum.) — Lea, 1870
+ Margaron (Prisodon) truncatus (Schum.) — Lea, 1852
+ Margarita (Unio) ambiguus Lea — Lea, 1838
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