Valvata
Encyclopedia
Valvata is a genus
Genus
In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...

 of very small freshwater snail
Freshwater snail
A freshwater snail is one kind of freshwater mollusc, the other kind being freshwater clams and mussels, i.e. freshwater bivalves. Specifically a freshwater snail is a gastropod that lives in a watery non-marine habitat. The majority of freshwater gastropods have a shell, with very few exceptions....

s with an operculum
Operculum (gastropod)
The operculum, meaning little lid, is a corneous or calcareous anatomical structure which exists in many groups of sea snails and freshwater snails, and also in a few groups of land snails...

, aquatic
Aquatic animal
An aquatic animal is an animal, either vertebrate or invertebrate, which lives in water for most or all of its life. It may breathe air or extract its oxygen from that dissolved in water through specialised organs called gills, or directly through its skin. Natural environments and the animals that...

 gastropod mollusks in the family Valvatidae
Valvatidae
Valvatidae, the valve snails, is a taxonomic family of very small freshwater snails with an operculum, aquatic gastropod mollusks.- Taxonomy :...

, the valve snails.

Species

The type species for this genus is Valvata cristata
Valvata cristata
Valvata cristata is a species of minute freshwater snail with an operculum, an aquatic gastropod mollusk or micromollusk in the family Valvatidae, the valve snails.-Shell description:...

O.F. Müller, 1774.

Species in the genus: Valvata O.F. Müller, 1773 include:

(All the European species are included in this list.)
  • Subgenus: Cincinna Hübner, 1810
    • Valvata (Cincinna) biwaensis Preston, 1916 = Biwakovalvata biwaensis
    • Valvata (Cincinna) chalinei Schlickum & Puisségur, 1978
    • Valvata (Cincinna) gaudryana Tournouër, 1866
    • Valvata (Cincinna) piscinalis
      Valvata piscinalis
      Valvata piscinalis, common name the European stream valvata, is a species of minute freshwater snail with gills and an operculum, an aquatic gastropod mollusk in the family Valvatidae, the valve snails. It is also known as Cincinna piscinalis .- Subspecies :Subspecies of Valvata piscinalis...

      (O.F. Müller, 1774) - European stream valvata
      • Valvata (Cincinna) piscinalis piscinalis (O.F. Müller, 1774) - European stream valvata
      • Valvata (Cincinna) piscinalis alpestris (Küster, 1853)
      • Valvata (Cincinna) piscinalis antiqua (Morris, 1838)
      • Valvata (Cincinna) piscinalis discors Westerlund, 1886
      • Valvata (Cincinna) piscinalis geyeri (Menzel, 1904)
    • Valvata (Cincinna) piscinaloidis Michaud, 1855
    • Valvata (Cincinna) saulcyi Bourguignat, 1853
    • Valvata (Cincinna) stenotrema Polinski, 1929
    • Valvata (Cincinna) studeri
      Valvata studeri
      Valvata studeri is a species of minute freshwater snail with an operculum, an aquatic gastropod mollusk in the family Valvatidae, the valve snails.-Distribution and conservation status:* Germany - critically endangered...

      Boeters & Falkner, 1998
    • Cincinna japonica
    • Cincinna kizakikoensis

  • Subgenus: Costovalvata Polinski, 1929
    • Valvata (Costovalvata) hirsutecostata Polinski, 1929
    • Valvata (Costovalvata) klemmi Schütt, 1962
    • Valvata (Costovalvata) rhabdota Sturany, 1894

  • Subgenus: Ohridotropidina Hadžišce 1955
    • Valvata (Ohridotropidina) relicta (Polinski, 1929)

  • Subgenus: Tropidina H. &. A. Adams, 1854
    • Valvata (Tropidina) macrostoma
      Valvata macrostoma
      Valvata macrostoma is a species of minute freshwater snail with an operculum, an aquatic gastropod mollusk in the family Valvatidae, the valve snails.-Habitat:...

      Mörch, 1864
    • Valvata (Tropidina) pulchella Studer, 1820
    • Valvata (Tropidina) salebrosa Meijer, 1990
    • Valvata (Tropidina) sibirica
      Valvata sibirica
      Valvata sibirica is a species of minute freshwater snail with an operculum, an aquatic gastropod mollusk in the family Valvatidae, the valve snails.- External links :*...

      Middendorff, 1851

  • Subgenus: Valvata O.F. Müller, 1773
    • Valvata (Valvata) cristata
      Valvata cristata
      Valvata cristata is a species of minute freshwater snail with an operculum, an aquatic gastropod mollusk or micromollusk in the family Valvatidae, the valve snails.-Shell description:...

      O.F. Müller, 1774
    • Valvata (Valvata) hokkaidoensis Miyadi, 1935

  • Subgenus: ? (not know yet)
    • Valvata montenegrina Gloër & Pešić, 2007


  • Subgenus: ? (not known for wikipedians)
    • Valvata aliena
      Valvata aliena
      Valvata aliena is a species of minute freshwater snail with an operculum, an aquatic gastropod mollusk in the family Valvatidae, the valve snails.- External links :*...

      Westerlund, 1877
    • Valvata bicarinata
      Valvata bicarinata
      Valvata bicarinata, common name the two-ridge valvata, is a species of small freshwater snail with a gill and an operculum, an aquatic gastropod mollusk in the family Valvatidae, the valve snails.- External links :...

      I. Lea, 1841 - two-ridge valvata
    • Valvata humeralis Say, 1829 - glossy valvata
    • Valvata incerta Yen, 1947 - late Cenozoic
    • Valvata lewisi
      Valvata lewisi
      Valvata lewisi, common name the fringed valvata, is a species of small freshwater snail with a gill and an operculum, an aquatic gastropod mollusk in the family Valvatidae, the valve snails.- Recommended literature :...

      Currier, 1868 - fringed valvata
    • Valvata mergella Westerlund, 1883 - rams-horn valvata
    • Valvata multicarinata Yen, 1946 - from Tertiary
    • Valvata normalis S. Walker
    • Valvata oregonensis
      Valvata oregonensis
      Valvata oregonensis is a fossil species of freshwater snail with a gill and an operculum, an aquatic gastropod mollusk in the family Valvatidae, the valve snails....

      Hanna, 1922
    • Valvata paula Pierce, 1993
    • Valvata perdepressa Walker, 1906 - purplecap valvata
    • Valvata procera Russell, 1952 - from Oligocene
    • Valvata simusyuensis
    • Valvata sincera
      Valvata sincera
      Valvata sincera, common name the mossy valvata or boreal turret snail, is a species of small freshwater snail with a gill and an operculum, an aquatic gastropod mollusk in the family Valvatidae, the valve snails.-Distribution:...

      Say, 1824 - mossy valvata
    • Valvata subumbilicata (Meek & Hayden, 1856) - from Middle Cenozoic (Oligocene)
    • Valvata tricarinata
      Valvata tricarinata
      Valvata tricarinata, common name the three-ridge valvata or threeridge valvata, is a species of small freshwater snail with a gill and an operculum, an aquatic gastropod mollusk in the family Valvatidae, the valve snails.-Distribution:...

      (Say, 1817) - three-ridge valvata, threeridge valvata
    • Valvata utahensis Call, 1884 - Utah roundmouth snail
      Utah roundmouth snail
      The Utah roundmouth snail, also known as the Utah valvata or desert valvata, scientific name Valvata utahensis, is a species of freshwater snail with a gill and an operculum, an aquatic gastropod mollusk in the family Valvatidae, the valve snails.This species of snail is endemic to the United...

    • Valvata virens
      Valvata virens
      Valvata virens, common name the emerald valvata, is a species of small freshwater snail, an aquatic gastropod mollusk in the family Valvatidae.This species is endemic to the United States....

      Tryon, 1863 - emerald valvata
    • Valvata windhauseni Parodiz, 1961
    • Valvata winnebagoensis F. C. Baker, 1928 - flanged valvata

External links

  • Valvata in The Paleobiology Database
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