''Fontigens'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial n ...

of minute

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 with an operculum, aquatic gastropod molluscs or

micromollusc A micromollusk is a shelled mollusk which is extremely small, even at full adult size. The word is usually, but not exclusively, applied to marine mollusks, although in addition, numerous species of land snails and freshwater mollusks also ...

s in the

family Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Idea ...

Hydrobiidae Hydrobiidae, commonly known as mud snails, is a large cosmopolitan family of very small freshwater and brackish water snails with an operculum; they are in the order Littorinimorpha. Distribution Hydrobiidae are found in much of the wor ...

Species

Species within the genus ''Fontigens'' include: *'' Fontigens aldrichi'' *'' Fontigens antroecetes'' *'' Fontigens binneyana'' *'' Fontigens bottimeri'' *'' Fontigens cryptica'' *'' Fontigens holsingeri'' Hubricht, 1976 - Tapered cavesnail *'' Fontigens morrisoni'' *'' Fontigens nickliniana'' *'' Fontigens orolibas'' *'' Fontigens proserpina'' *'' Fontigens tartarea'' *'' Fontigens turritella'' Hubricht, 1976 - Greenbrier cavesnail

References

Animal Diversity Web, Fontigens Classification Hydrobiidae Taxonomy articles created by Polbot {{Hydrobiidae-stub