†''Paraprosostenia'' is a fossil

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

of prehistoric

freshwater snail Freshwater snails are gastropod mollusks that 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 t ...

aquatic Aquatic means relating to water; living in or near water or taking place in water; does not include groundwater, as "aquatic" implies an environment where plants and animals live. Aquatic(s) may also refer to: * Aquatic animal, either vertebrate ...

gastropod Gastropods (), commonly known as slugs and snails, belong to a large Taxonomy (biology), taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, freshwater, and fro ...

mollusk Mollusca is a phylum of protostomic invertebrate animals, whose members are known as molluscs or mollusks (). Around 76,000 extant species of molluscs are recognized, making it the second-largest animal phylum after Arthropoda. The ...

s in the family

Pomatiopsidae Pomatiopsidae is a family of small, mainly freshwater snails, (some also occur in other habitats) that have gills and an operculum, aquatic gastropod mollusks in the superfamily Truncatelloidea (according to the taxonomy of the Gastropoda b ...

Species

Species within the genus ''Paraprosostenia'' include: * '' Paraprosostenia minuta'' Annandale, 1919 - type species, fossil of

Pleistocene The Pleistocene ( ; referred to colloquially as the ''ice age, Ice Age'') is the geological epoch (geology), epoch that lasted from to 11,700 years ago, spanning the Earth's most recent period of repeated glaciations. Before a change was fin ...

of Namma in northern

Burma Myanmar, officially the Republic of the Union of Myanmar; and also referred to as Burma (the official English name until 1989), is a country in northwest Southeast Asia. It is the largest country by area in Mainland Southeast Asia and ha ...

,Davis G. M., Kuo Y.-H., Elaine Hoagland K., Chen P.-L., Yang H.-M. & Chen D.-J. (1981). "''Kunmingia'', a New Genus of Triculinae (Gastropoda: Pomatiopsidae) from China: Phenetic and Cladistic Relationships". ''

Proceedings of the Academy of Natural Sciences of Philadelphia The ''Proceedings of the Academy of Natural Sciences of Philadelphia'' is a peer-reviewed scientific journal In academic publishing, a scientific journal is a periodical publication designed to further the progress of science by disseminating ...

'' 136: 165-193
JSTOR
The length of the shell is 6 mm. It was found in freshwater lake beds, so it is presumed to be a freshwater species as is the case in all other Triculinae. Davis (1979) classified also four extant species within the genus ''Paraprosostenia''. Later Davis (1981)Davis G. M. (1981). "Different Modes of Evolution and Adaptive Radiation in the Pomatiopsidae (Prosobranchia: Mesogastropoda)". ''

Malacologia ''Malacologia'' is a peer-reviewed scientific journal in the field of malacology, the study of mollusks. The journal publishes articles in the fields of molluscan systematics, ecology, population ecology, genetics, molecular genetics, evolution, an ...

'' 21(1-2)
209
262
table 1
referred number of species in ''Paraprososthenia'' to be ten. Subsequently Davis et al. (1981) restricted the genus ''Paraprosostenia'' to the Pleistocene of Burma. These four extant species were moved to the newly established genus ''

Neoprososthenia ''Neoprososthenia'' is a genus of freshwater snails with gills and an operculum, aquatic gastropod mollusks in the family Pomatiopsidae Pomatiopsidae is a family of small, mainly freshwater snails, (some also occur in other habitats) that h ...

'': * (extant) ''Paraprososthenia hanseni'' Brandt, 1970 is a synonym of ''

Neoprososthenia hanseni ''Neoprososthenia'' is a genus of freshwater snails with gills and an operculum, aquatic gastropod mollusks in the family Pomatiopsidae Pomatiopsidae is a family of small, mainly freshwater snails, (some also occur in other habitats) that ...

'' (Brandt, 1970) * (extant) ''Paraprososthenia iijimai'' Brandt, 1970 is a synonym of ''

Neoprososthenia iijimai ''Neoprososthenia'' is a genus of freshwater snails with gills and an operculum, aquatic gastropod mollusks in the family Pomatiopsidae Pomatiopsidae is a family of small, mainly freshwater snails, (some also occur in other habitats) that ...

'' (Brandt, 1970) * (extant) ''Paraprososthenia levayi'' (Bavay, 1895) is a synonym of ''

Neoprososthenia levayi ''Neoprososthenia'' is a genus of freshwater snails with gills and an operculum, aquatic gastropod mollusks in the family Pomatiopsidae Pomatiopsidae is a family of small, mainly freshwater snails, (some also occur in other habitats) that h ...

'' (Bavay, 1895) * (extant) ''Paraprososthenia poirieri'' (Brandt, 1970) is a synonym of '' Neoprososthenia poirieri'' (Brandt, 1970)

References

Pomatiopsidae Pleistocene gastropods {{Pomatiopsidae-stub