Orthalicoidea
Encyclopedia
The Orthalicoidea are a superfamily
of air-breathing land snail
s, terrestrial
gastropod mollusks in the informal group Sigmurethra
.
The following seven families
have been recognized in the taxonomy of Bouchet & Rocroi (2005)
:
and Cerionidae
to newly established superfamily Urocoptoidea
based on molecular phylogeny
research in 2008.
n superfamily Orthalicoidea, while it was previously tentatively placed as a synonym of Aillyidae
.
Taxonomic rank
In biological classification, rank is the level in a taxonomic hierarchy. Examples of taxonomic ranks are species, genus, family, and class. Each rank subsumes under it a number of less general categories...
of 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...
gastropod mollusks 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....
.
2005 taxonomy
This taxonomy, as accepted by Bouchet & Rocroi, was based on the study by Nordsieck, published in 1986, and the classification as formulated by Schileyko in 1999. However Bouchet & Rocroi diverged from this classification in uniting the families Bulimulidae and Orthalacidae. They also considered the family Placostylidae as a distinct family from Orthalicidae, and the family Coelociontidae a distinct family from Urocoptidae. However, the position of the families Megaspiridae and Grangerellidae is doubtful.The following seven families
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...
have been recognized in the taxonomy of 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...
:
- Family CerionidaeCerionidaeCerionidae is a family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Urocoptoidea.- 2008 taxonomy :...
Pilsbry, 1901 - Family CoelociontidaeCoelociontidaeCoelociontidae is a family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the clade Eupulmonata .This family has no subfamilies.-Genera:...
Iredale, 1937 - † Family GrangerellidaeGrangerellidae†Grangerellidae is an extinct family of gastropods in the clade Eupulmonata .-Genera :Genera within the family Grangerellidae include:* Grangerella, the type genus...
Russell, 1931 - Family MegaspiridaeMegaspiridaeMegaspiridae is a family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Orthalicoidea .- Subfamilies :...
Pilsbry, 1904 - Family OrthalicidaeOrthalicidaeOrthalicidae are a family of tropical air-breathing land snails, terrestrial pulmonate gastropod mollusks are classified in the informal group Sigmurethra of the clade Stylommatophora...
Albers, 1860 - Family PlacostylidaePlacostylidaePlacostylidae is a family of land snails, gastropods in the superfamily Orthalicoidea.- Taxonomy :The Placostylidae family is classified within the informal group Sigmurethra, itself belonging to the clade Stylommatophora within the clade Eupulmonata .This family has no subfamilies Placostylidae is...
Pilsbry, 1946 - Family UrocoptidaeUrocoptidaeUrocoptidae 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...
Pilsbry, 1898 (1868)
2008 taxonomy
Uit de Weerd has moved two families UrocoptidaeUrocoptidae
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...
and Cerionidae
Cerionidae
Cerionidae is a family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Urocoptoidea.- 2008 taxonomy :...
to newly established superfamily Urocoptoidea
Urocoptoidea
Urocoptoidea is a superfamily of land snails, gastropods in the informal group Sigmurethra. cfThe superfamily Urocoptoidea has been established by Uit de Weerd based on molecular phylogeny research in 2008.- Families :...
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.
2009 taxonomy
Family Prestonellidae van Bruggen, 1978 - A study by Herbert and Mitchell, published in 2009, places this enigmatic family, of which the phylogenetic relationships were previously unknown, in the GondwanaGondwana
In paleogeography, Gondwana , originally Gondwanaland, was the southernmost of two supercontinents that later became parts of the Pangaea supercontinent. It existed from approximately 510 to 180 million years ago . Gondwana is believed to have sutured between ca. 570 and 510 Mya,...
n superfamily Orthalicoidea, while it was previously tentatively placed as a synonym of Aillyidae
Aillyidae
Aillyidae is a family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the informal group Sigmurethra.Aillyidae is the only family in the superfamily Aillyoidea....
.
2011 taxonomy
There is an inventory of the type material of Orthalicoidea in progress and few publications providing new schemes in the taxonomy of Orthalicoidea are in preparation.Further reading
- Breure A. S. H., Groenenberg D. S. J. & Schilthuizen M. (2010). "New insights in the phylogenetic relations within the Orthalicoidea (Gastropoda, Stylommatophora) based on 28S sequence data". Basteria 74(1-3): 25-31.