Valloniidae is a taxonomic family

Family (biology)

In biological classification, family is* a taxonomic rank. Other well-known ranks are life, domain, kingdom, phylum, class, order, genus, and species, with family fitting between order and genus. As for the other well-known ranks, there is the option of an immediately lower rank, indicated by the...

 of small and minute, air-breathing land snail

Land snail

A land snail is any of the many species of snail that live on land, as opposed to those that live in salt water and fresh water. Land snails are terrestrial gastropod mollusks that have shells, It is not always an easy matter to say which species are terrestrial, because some are more or less...

s, terrestrial

Terrestrial animal

Terrestrial animals are animals that live predominantly or entirely on land , as compared with aquatic animals, which live predominantly or entirely in the water , or amphibians, which rely on a combination of aquatic and terrestrial habitats...

 pulmonate gastropod mollusks in the clade Stylommatophora

Stylommatophora

Stylommatophora is a taxon of air-breathing land snails and slugs, terrestrial pulmonate gastropod molluscs. This taxon is currently considered to be a clade. It was previously regarded as an infraorder...

.

Anatomy

In this family, the number of haploid chromosome

Chromosome

A chromosome is an organized structure of DNA and protein found in cells. It is a single piece of coiled DNA containing many genes, regulatory elements and other nucleotide sequences. Chromosomes also contain DNA-bound proteins, which serve to package the DNA and control its functions.Chromosomes...

s lies between 26 and 30 (according to the values in this table).

Taxonomy

The family Valloniidae has no subfamilies (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005

Taxonomy of the Gastropoda (Bouchet & Rocroi, 2005)

The taxonomy of the Gastropoda as it was revised by Philippe Bouchet and Jean-Pierre Rocroi is currently the most up-to-date overall system for classifying gastropod mollusks...

).

Genera

Genera within the family Valloniidae include:

• Acanthinula
  Acanthinula
  Acanthinula is a genus of minute, air-breathing land snails, terrestrial pulmonate gastropod mollusks or micromollusks in the family Valloniidae.- Species :The genus Acanthinula contains the following species:...
  
  Beck, 1847
• Spermodea
  Spermodea
  Spermodea is a genus of minute European land snails, terrestrial gastropod molluscs, or micromolluscs, in the family Valloniidae.-Species:Species within the genus include:* Spermodea lamellata...
  
  Westerlund, 1902
• Vallonia
  Vallonia
  Vallonia is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Valloniidae.- Species :Species in the genus Vallonia include:* Vallonia allamanica* Vallonia costata Vallonia is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in...
  
  Risso, 1826 - type genus of the family Valloniidae
• Planogyra
  Planogyra
  Planogyra is a genus of small air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Valloniidae.-Species:Species within the genus Planogyra include:* Planogyra asteriscus * Planogyra clappi...
  
  Morse, 1864
• Pupisoma
  Pupisoma
  Pupisoma is a genus of minute, air-breathing land snails, terrestrial pulmonate gastropod molluscs or micromollusks in the family Valloniidae.Pupisoma is placed within Valloniidae, because Pupisomatidae is a synonym of Valloniidae.-Species:...
  
  Stoliczka 1873
• Zoogenetes Morse, 1864