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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 | Venerida | Cyrenoidea | Cyrenoididae

genus Polymesoda Rafinesque, 1820: synonymy
     19 Recent valid species (19 total species)

Polymesoda Rafinesque, 1820
Rafinesque, 1820. Ann. Gén. Sci. Phys. 5 (13): 319.
Rafinesque, 1864. [in] Binney & Tryon, reprint: 61.
(intro'd as sub-gen. of Cyclas Lamarck, 1799)
Type species: Cyclas caroliniana Bosc, 1801 (orig. desig.) = Polymesoda caroliniana

Pseudocyrena Bourguignat, 1854
Bourguignat, 1854. Rev. Mag. Zool. 6: 673.
Type species: Cyrena maritima d’Orbigny, 1853 = Polymesoda floridana

Anomala Deshayes, 1855
Deshayes, 1853. Cat. Bivalves Brit. Mus. part 1: 255.
Deshayes, 1855. Proc. Zool. Soc. London 22: 20.
(homonym of v. Block, 1799 [Hymen.]; intro'd as sub-gen. of Cyrena Lamarck, 1818; renamed Egeta Adams & Adams, 1857)
Type species: Cyrena anomala Deshayes, 1855 (tautonomy) = Polymesoda anomala

Egeta Adams & Adams, 1857
Adams & Adams, 1857. Gen. Rec. Moll. 2(31-32): 651.
(new name for Anomala Deshayes, 1855)

Egetaria Mørch, 1861
Mørch, 1861. Malak. Blatt. 7: 194.
Type species: Polymesoda (Egetaria) pullastra Mørch, 1861 = Polymesoda notabilis

Cyprinella Gabb, 1864
Gabb, 1864. Geol. Surv. Calif., Paleont. 1: 170.
(homonym of Girard, 1856 [Pisces]; renamed Diodus Gabb, 1869)

Diodus Gabb, 1869
Gabb, 1869. Geol. Surv. Calif., Paleont. 2: 242.
(new name for Cyprinella Gabb, 1864)

Leptosiphon Fischer, 1872
Fischer, 1872. Ann. Lyceum New York 10: 195.
Type species: Cyclas caroliniana Bosc, 1801 = Polymesoda caroliniana

Neocyrena Fischer & Crosse, 1894
Fischer & Crosse, 1894. Miss. Sci. Mexique, Rech. Zool. 2(16): 631, 634.
Type species: Cyrena nicaraguana Prime, 1870 (sub. desig. by H.B. Baker, 1930: 60) = Polymesoda fortis

Polymeroda Deshayes, 1853
Deshayes, 1853. Cat. Bivalves Brit. Mus. part 1: 241.
(error for Polymesoda Rafinesque, 1820)

Taxonomic History (since 1900)

Polymesoda (Egeta)Martens (1900), Olsson (1961), Keen (1971)
Polymesoda (s.s.)Martens (1900), Thiele (1934), Olsson (1961), Keen (1971)
Polymesoda (Cyrenocapsa)Martens (1900)
Cyrena (s.s. sec. Polymesoda)Dall (1903)
Cyrena (Pseudocyrena)Dall (1903)
Cyrena (Pseudocyrena sec. Egetaria)Dall (1903)
PolymesodaH.B. Baker (1930), Morrison (1946), Turgeon et al. (1998), Park & Ó Foighil (2000), Siripattrawan et al. (2000), ... Combosch et al. (2017), Kondakov et al. (2020), Ituarte (2020), Czaja et al. (2023), Wu et al. (2023)
Polymesoda (Pseudocyrena)Thiele (1934), Olsson (1961)
Polymesoda (Egetaria)Thiele (1934)
NeocyrenaOlsson (1961), OBIS (2012)
Polymesoda (Neocyrena)Keen (1971)
CyanocyclasSimone (2006)
GeloinaOBIS (2012)

 
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