Sigmurethra
From Wikipedia, the free encyclopedia
| Sigmurethra Fossil range: Cretaceous–Recent |
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| Various examples of Sigmurethra | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| (unranked): | clade Heterobranchia
informal group Pulmonata |
| Superfamilies | |
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see text |
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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.
The two strong synapomorphies of Sigmurethra are a long pedal gland placed beneath a membrane and retractile tentacles.[1]
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.[2]
In the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005, Sigmurethra is an "Informal Group", a subsection of the Stylommatophora.[3]
[edit] Taxonomy
- Superfamily Clausilioidea
- Family Clausiliidae
- † Family Anadromidae
- † Family Filholiidae
- † Family Palaeostoidae
- Superfamily Orthalicoidea
- Family Orthalicidae
- Family Cerionidae
- Family Coelociontidae
- † Family Grangerellidae
- Family Megaspiridae
- Family Placostylidae
- Family Urocoptidae
- Superfamily Achatinoidea
- Family Achatinidae
- Family Ferussaciidae
- Family Micractaeonidae
- Family Subulinidae
- Superfamily Aillyoidea
- Family Aillyidae
- Superfamily Testacelloidea
- Family Testacellidae
- Family Oleacinidae
- Family Spiraxidae
- Superfamily Papillodermatoidea
- Family Papillodermatidae
- Superfamily Streptaxoidea
- Family Streptaxidae
- Superfamily Rhytidoidea
- Family Rhytididae
- Family Chlamydephoridae
- Family Haplotrematidae
- Family Scolodontidae
- Superfamily Acavoidea
- Family Acavidae
- Family Caryodidae
- Family Dorcasiidae
- Family Macrocyclidae
- Family Megomphicidae
- Family Strophocheilidae
- Superfamily Punctoidea
- Family Punctidae
- † Family Anastomopsidae
- Family Charopidae
- Family Cystopeltidae
- Family Discidae
- Family Endodontidae
- Family Helicodiscidae
- Family Oreohelicidae
- Family Thyrophorellidae
- Superfamily Sagdoidea
- Family Sagdidae
[edit] limacoid clade
- Superfamily Staffordioidea
- Family Staffordiidae
- Superfamily Dyakioidea
- Family Dyakiidae
- Superfamily Gastrodontoidea
- Family Gastrodontidae
- Family Chronidae
- Family Euconulidae
- Family Oxychilidae
- Family Pristilomatidae
- Family Trochomorphidae
- Fossil taxa probably belonging to the Gastrodontoidea
- Subfamily † Archaeozonitinae
- Subfamily † Grandipatulinae
- Subfamily † Palaeoxestininae
- Superfamily Parmacelloidea
- Family Parmacellidae
- Family Milacidae
- Family Trigonochlamydidae
- Superfamily Zonitoidea
- Family Zonitidae
- Superfamily Helicarionoidea
- Family Helicarionidae
- Family Ariophantidae
- Family Urocyclidae
- Superfamily Limacoidea
- Family Limacidae
- Family Agriolimacidae
- Family Boettgerillidae
- Family Vitrinidae
Two superfamilies belongs to clade Sigmurethra, but they are not in the limacoid clade.
- Superfamily Arionoidea
- Family Arionidae
- Family Anadenidae
- Family Ariolimacidae
- Family Binneyidae
- Family Oopeltidae
- Family Philomycidae
- Superfamily Helicoidea
- Family Helicidae
- Family Bradybaenidae
- Family Camaenidae
- Family Cepolidae
- Family Cochlicellidae
- Family Elonidae
- Family Epiphragmophoridae
- Family Halolimnohelicidae
- Family Helicodontidae
- Family Helminthoglyptidae
- Family Humboldtianidae
- Family Hygromiidae
- Family Monadeniidae
- Family Pleurodontidae
- Family Polygyridae
- Family Sphincterochilidae
- Family Thysanophoridae
- Family Trissexodontidae
- Family Xanthonychidae
(Families that are exclusively fossil are indicated with a dagger †)
[edit] References
- ^ Lunarejo. et al. 2008.
- ^ (in Czech) Pek I., Vašíček Z., Roček Z., Hajn. V. & Mikuláš R.: Základy zoopaleontologie. - Olomouc, 1996. 264 pp., ISBN 80-7067-599-3.
- ^ 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
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