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Page last updated
Thu 3 September 2025

The Freshwater Mussels (Unionoida) of the World (and other less consequential bivalves)

FM(U)otW(aolcb) is the web version of the MUSSEL Project Database. Follow the links to browse the data or use the custom Google search field. Either way, you win!

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Bivalvia | Unionida | Unionoidea | Unionidae | Gonideinae | Gonideini | Ptychorhynchus

species Ptychorhynchus schoedei (Haas, 1930): synonymy
     1 specimen

Nodularia undulata Haas, 1910
Haas, 1910. Ann. Mag. Nat. Hist. 6: 497.
Haas, 1910. Conch. Cab. 9 (pt. 2, h. 42): pl. 10, figs. 2-3.
Haas, 1911. Conch. Cab. 9 (pt. 2, h. 45): 100.
(renamed Unio schoedei Haas, 1930; homonym of Unio undulata Say, 1817)

Nodularia (s.s.) undulataHaas (1911), Simpson (1914)
Unio schoedeiHaas (1969)
Ptychorhynchus schoedeiHe & Zhuang (2013)

Unio schoedei Haas, 1930
Haas, 1910. Ann. Mag. Nat. Hist. 6: 497 [as ‘Nodularia undulata’].
Haas, 1930. Senckenbergiana 12(1): 6 [as ‘schödei’].
(new name for Nodularia undulata Haas, 1910)

Unio schoedeiHaas (1969)
Middendorffinaia (Pseudopotomida) schoedi [sic]Moskvicheva & Starobogatov (1973)
Nodularia schoedeiGraf & Cummings (2007), Bogan (2010)
Ptychorhynchus schoedeiHe & Zhuang (2013), Zieritz et al. (2018), Graf & Cummings (2021)

Middendorffinaia schoedi Moskvicheva & Starobogatov, 1973
‘Haas’ Moskvicheva & Starobogatov, 1973. Byull. Mosk. Obshch.. Ispyt. Prir. 78(2): 31.
(error for Unio schoedei Haas, 1930)

Taxonomic History (since 1900)

Nodularia (s.s.) undulataHaas (1911), Simpson (1914)
Unio schoedeiHaas (1969)
Middendorffinaia (Pseudopotomida) schoedi [sic]Moskvicheva & Starobogatov (1973)
Nodularia schoedeiGraf & Cummings (2007), Bogan (2010)
Ptychorhynchus schoedeiHe & Zhuang (2013), Zieritz et al. (2018), Graf & Cummings (2021)

 
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