维基百科 Valvata is a genus of very small freshwater snails with an operculum, aquatic gastropod mollusks in the family Valvatidae, the valve snails. [2] Contents [hide] 1 Synonyms 2 Species 3 References 4 External links Synonyms[edit] Cincinna Hübner, 1810 · accepted, alternate representation (Cincinna is treated as subgenus of Valvata) Cincinna (Atropidina) Lindholm, 1906 (subgenus-genus combination invalid; Atropidina is considered a junior synonym of Tropidina or Cincinna (depending on source); to avoid problems we refer to Valvata only) Cincinna (Cincinna) Hübner, 1810 (Cincinna is treated as subgenus of Valvata) Gyrorbis Fitzinger, 1833 (junior synonym (?)) Planorbis (Gyrorbis) Fitzinger, 1833 (junior synonym (?)) Valvata (Atropidina) Lindholm, 1906 (type species of Atropidina (Valvata pulchella Studer, 1789) is considered a junior synonym of V. (Cincinna) piscinalis; however, FE ranks Atropidina as synonym of Tropidina (type species: V. macrostoma M?rch, 1864); to avoid problems we refer to Valvata)