Biology:Sigmurethra

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Short description: Informal group of gastropods

Sigmurethra
Temporal range: Cretaceous–Recent
Various examples of Sigmurethra
Various examples of Sigmurethra
Scientific classification e
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Heterobranchia
Order: Stylommatophora
Informal group: Sigmurethra
Superfamilies
Synonyms[1]
  • Helicina Rafinesque, 1815

Sigmurethra is a taxonomic category of air-breathing land snails and slugs, terrestrial pulmonate gastropod molluscs. This is an informal group which includes most land snails and slugs.

The two strong synapomorphies of Sigmurethra are a long pedal gland placed beneath a membrane and retractile tentacles.[2]

Several families in this group contain species of snails and slugs that create love darts.

Sigmurethra are known from the Cretaceous to the Recent periods.[3]

Taxonomy

2005 Taxonomy

In the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005, Sigmurethra is an "Informal Group", a subsection of the Stylommatophora.[4] It consists of the following families:

limacoid clade

Informal group Sigmurethra continued

Two superfamilies belongs to clade Sigmurethra, but they are not in the limacoid clade.

(Families that are exclusively fossil are indicated with a dagger †)

New families after 2005

2017 Taxonomy

After excluding groups not related, the informal group Sigmurethra becomes suborder Helicina, with the following nine infraorders and a collection of families with no superfamily:Cite error: Closing </ref> missing for <ref> tag

References

  1. MolluscaBase (2018). Helicina. Accessed through: World Register of Marine Species at: http://marinespecies.org/aphia.php?p=taxdetails&id=994701 on 2018-02-22
  2. Lunarejo. et al. 2008.
  3. (in Czech) Pek I., Vašíček Z., Roček Z., Hajn. V. & Mikuláš R.: Základy zoopaleontologie. - Olomouc, 1996. 264 pp., ISBN:80-7067-599-3.
  4. Bouchet P. & Rocroi J.-P. (Ed.); Frýda J., Hausdorf B., Ponder W., Valdés Á. & Warén A. 2005. Classification and nomenclator of gastropod families. Malacologia: International Journal of Malacology, 47(1-2). ConchBooks: Hackenheim, Germany. ISBN:3-925919-72-4. ISSN 0076-2997. 397 pp. http://www.vliz.be/Vmdcdata/imis2/ref.php?refid=78278
  5. 5.0 5.1 Sutcharit C., Naggs F., Wade C. M., Fontanilla I. & Panha S. (2010). "The new family Diapheridae, a new species of Diaphera Albers from Thailand, and the position of the Diapheridae within a molecular phylogeny of the Streptaxoidea (Pulmonata: Stylommatophora)". Zoological Journal of the Linnean Society 160: 1-16. doi:10.1111/j.1096-3642.2009.00598.x.
  6. "Oleacinoidei". MolluscaBase. World Register of Marine Species. 2018. http://www.marinespecies.org/aphia.php?p=taxdetails&id=1057260. 
  7. "Haplotrematoidea H.B. Baker, 1925". MolluscaBase. World Register of Marine Species. 2018. http://www.marinespecies.org/aphia.php?p=taxdetails&id=994702. 

Wikidata ☰ Q3483567 entry