''Nystia'' is an extinct

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

of fossil

freshwater snail Freshwater snails are gastropod mollusks which live in fresh water. There are many different families. They are found throughout the world in various habitats, ranging from ephemeral pools to the largest lakes, and from small seeps and springs ...

s, aquatic

gastropod The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, from freshwater, and from land. T ...

mollusc Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is esti ...

s in the family

Truncatellidae Truncatellidae, common name the "looping snails", is a family of small amphibious snails, with gills and an operculum, semi-marine gastropod mollusks or micromollusks. Shell description This family of snails have small shells which lose th ...

.Kadolsky D. (1988). "Mollusken aus dem Oligozän von Sieblos a.d. Wasserkuppe/Rhön". '' Beitrage zur Naturkunde in Osthessen'', Fulda, 24: 99-129. pages 103-105. The genus ''Nystia'' was previously classified within the

Stenothyridae Stenothyridae is a family of small freshwater snails, snails with gills and an operculum, aquatic gastropod mollusks in the superfamily Truncatelloidea. This family has no subfamilies. Distribution There are known about 60 freshwater speci ...

or the Micromelaniidae. It is currently classified within the Truncatellidae according to Kadolsky (1988).

Distribution

The distribution of the genus ''Nystia'' includes France and the Czech Republic.

Species

Species in the genus ''Nystia'' include: * '' Nystia duchasteli'' (Nyst, 1836) - synonym: ''Paludina duchasteli'' Nyst, 1836, type species, from Eocene of France * ''

Nystia lenoiri ''Nystia'' is an extinct genus of fossil freshwater snails, aquatic gastropod molluscs in the family Truncatellidae.Kadolsky D. (1988). "Mollusken aus dem Oligozän von Sieblos a.d. Wasserkuppe/Rhön". '' Beitrage zur Naturkunde in Osthessen'', F ...

'' * '' Nystia rubeschi''PDF
image on page 57.

Distribution

Species

References

Further reading