Polymesoda

Polymesoda is a genus of clams in the family Cyrenidae. The genus was previously classified in the family Corbiculidae, before it was subsumed into Cyrenidae.

Species
The following species are recognised in the genus Polymesoda:


 * Polymesoda aequilatera (Deshayes, 1855)
 * Polymesoda anomala (Deshayes, 1855)
 * Polymesoda arctata (Deshayes, 1855)
 * †Polymesoda borealis Kadolsky, 1995
 * †Polymesoda bravoensis (Olsson, 1931)
 * Polymesoda caroliniana (Bosc, 1801) – Carolina marsh clam
 * †Polymesoda convexa (Brongniart, 1822)
 * †Polymesoda cordata (J. Morris, 1854)
 * †Polymesoda dejaeri Glibert & van de Poel, 1966
 * †Polymesoda deperdita (Lamarck, 1806)
 * †Polymesoda distorta (Ludwig, 1865)
 * †Polymesoda donacina (F. Sandberger, 1861)
 * †Polymesoda dulwichiensis (Rickman, 1860)
 * Polymesoda exquisita (Prime, 1867)
 * Polymesoda floridana (Conrad, 1846)
 * Polymesoda fontainei (d'Orbigny, 1842)
 * Polymesoda fortis (Prime, 1861)
 * Polymesoda inflata (Philippi, 1851)
 * †Polymesoda laevis (Lamarck, 1805)
 * †Polymesoda langauensis Hölzl, 1957
 * Polymesoda meridionalis (Prime, 1865)
 * †Polymesoda mermieri (Depéret, 1896)
 * Polymesoda mexicana (Broderip & G. B. Sowerby I, 1829)
 * †Polymesoda muravchiki Pérez, Genta Iturrería & Griffin, 2010
 * Polymesoda neubaueri Coan & Valentich-Scott, 2022
 * Polymesoda notabilis (Deshayes, 1855)
 * †Polymesoda obovata (J. Sowerby, 1817)
 * Polymesoda obscura (Prime, 1860)
 * Polymesoda ordinaria (Prime, 1865)
 * †Polymesoda pireti (Cossmann, 1908)
 * Polymesoda placens (Hanley, 1845)
 * Polymesoda radiata (Hanley, 1845)
 * †Polymesoda salobris (Ihering, 1907)
 * †Polymesoda subarata (Schlotheim, 1820)
 * †Polymesoda tegalensis Oostingh, 1935
 * †Polymesoda transcaucasica (Kvaliashvili, 1962)
 * Polymesoda triangula (Busch in Philippi, 1849)
 * Polymesoda tribunalis (Prime, 1870)
 * †Polymesoda trigalensis (Olsson, 1931)
 * †Polymesoda ulmensis (F. Sandberger, 1872)
 * †Polymesoda visenoviensis Kadolsky, 1989

Many former species of the genus Polymesoda were transferred to the genus Geloina, while others were synonymized or transferred to different genera. For a list of former species see List of former species in the genus Polymesoda.
 * Former species