Urocoptoidea is a superfamily of 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, gastropods in the informal group Sigmurethra

Sigmurethra

Sigmurethra is a taxonomic category of air-breathing land snails and slugs, terrestrial pulmonate gastropod molluscs. This is an Informal Group which includes the majority of land snails and slugs....

. cf

The superfamily Urocoptoidea has been established by Uit de Weerd based on molecular phylogeny

Molecular phylogeny

Molecular phylogenetics is the analysis of hereditary molecular differences, mainly in DNA sequences, to gain information on an organism's evolutionary relationships. The result of a molecular phylogenetic analysis is expressed in a phylogenetic tree...

 research in 2008.

Families

There are two families within the superfamily Urocoptoidea:

• Urocoptidae
  Urocoptidae
  Urocoptidae is a family of land snails, gastropods in the superfamily Urocoptoidea.- 2005 taxonomy :The Urocoptidae family has been classified in the superfamily Orthalicoidea within the informal group Sigmurethra, itself belonging to the clade Stylommatophora within the clade Eupulmonata .The...
  
  
• Cerionidae
  Cerionidae
  Cerionidae is a family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Urocoptoidea.- 2008 taxonomy :...
  
  

Those two families were classified within the superfamily Orthalicoidea

Orthalicoidea

The Orthalicoidea are a superfamily of air-breathing land snails, terrestrial gastropod mollusks in the informal group Sigmurethra.- 2005 taxonomy :...

 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...

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