Cerithioidea
| Cerithioidea | ||||||||||||
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The shell of a tower snail ( Turritella sp.) |
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Cerithioidea | ||||||||||||
| Férussac , 1819 |
The Cerithioidea are a superfamily of predominantly marine snails from the order of the Sorbeoconcha . It also contains several groups of freshwater snails (e.g. Thiaridae ( crown snails )), some of which have colonized freshwater from the sea , some independently of one another . The fossil record for the Cerithioidea goes back to the Chalk .
features
More or less typical for representatives of this group of Caenogastropoda are an (at least originally) tower-shaped shell, the presence of an operculum and an at least partially open gonoduct. All species are sexually separated, and parthenogenetic species also occur occasionally . The majority of the cerithioidea are oviparous , some groups are ovoviviparous or viviparous .
Systematics
In the classical systematics, the Cerithioidea belong to the Mesogastropes (middle snails ), an order of the Prosobranchia (front gill snails). This classification is considered out of date, since the mesogastropods are not a monophyletic group. In the phylogenetic system presented here, the Cerithioidea are assigned to the order Sorbeoconcha , subclass Orthogastropoda .
According to the current classification , the superfamily includes the following families (in alphabetical order):
- Batillariidae Thiele, 1929 (marine)
- † Brachytrematidae Cossmann, 1906
- † Cassiopidae Beurlen, 1967
- Cerithiidae (Férussac, 1819) (marine)
- Dialidae Ludbrook, 1941 (marine)
- Diastomatidae Crosse & Fischer, 1893 (marine)
- † Eustomatidae Cossmann, 1906
- † Ladinulidae Bandel, 1992
- † Lanascalidae Bandel, 1992
- Lavigeriidae Thiele, 1925 (marine)
- Litiopidae Gray, 1847 (marine)
- † Macraxidae Bandel, Gründel & Maxwell, 2000
- Melanopsidae A. Adams & H. Adams, 1854 (freshwater)
- † Metacerithiidae Cossmann, 1906
- Modulidae P. Fischer, 1884 (marine)
- Pachychilidae Troschel, 1857 (fresh and brackish water)
- Paludomidae Gill, 1871 (freshwater)
- Pareoxidae Gray, 1850 (marine)
- Planaxidae Gray, 1850 (marine)
- Pleuroceridae P. Fischer, 1885 (fresh water)
- † Popenellidae Bandel, 1992
- Potamididae A. & H. Adams, 1854 (marine and brackish water, mangrove snails)
- † Procerithiidae Cossmann, 1906
- † Prostyliferidae Bandel, 1992
- † Propupaspiridae Vorteilel , Pan & Erwin, 2002
- Scaliolidae Jousseaume, 1912 (marine)
- Siliquariidae Anton, 1838
- Syrnolopsidae Bourguignat, 1890 (marine)
- Tenagodidae Gill, 1871 (marine)
- † Terebrellidae Delpey, 1941
- Thiaridae Troschel, 1857 (freshwater, crown snails)
- Turritellidae Lovén, 1847 (marine, tower snails)
literature
- Philippe Bouchet & Jean-Pierre Rocroi: Part 2. Working classification of the Gastropoda . Malacologia, 47: 239-283, Ann Arbor 2005 ISSN 0076-2997
- Victor Millard: Classification of the Mollusca. A Classification of World Wide Mollusca. Rhine Road, South Africa 1996, ISBN 0-620-21261-6