Caenogastropoda
| Caenogastropoda | ||||||||||||
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Atlantic triton snail ( Charonia nobilis ) eats a starfish |
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Caenogastropoda | ||||||||||||
| Cox , 1960 |
The Caenogastropoda are the largest group within the snails (Gastropoda). They are a subgroup of the Apogastropoda (and sister group of the Heterobranchia ). In Systema Naturae 2000, the group is assigned higher priority. It consists of the two sister groups Sorbeoconcha and Architaenioglossa .
characterization
According to Ponder and Lindberg 1997, the Caenogastropoda are well characterized by 14 synapomorphic features. According to the large number of species, the variation in the housing is very large. They are mainly marine snails, a few groups ( Architaenioglossa ) also occur in fresh water.
Breakdown
The group was originally set up by Cox in 1960 as an order. Later authors then also viewed the group as a parent. In Ponder & Lindberg (1997), on the other hand, the group is not assigned a rank in the linear-hierarchical sense, but only the position in the family tree of the snails is justified. You only speak of a “clade”, ie a branch. They are established in the phylogenetic system as the sister group of the heterobranchia . With this group the Caenogastropoda are united to a Monophylum Apogastropoda . Bouchet & Rocroi (2005) do not assign any rank to the group either. The Systema Naturae 2000 lists the Caenogastropoda again as a parent. In the hierarchical system, the apogastropods are assigned the rank of an infra-class or sub-class:
- Infraclass Apogastropoda Salvini-Plawen & Haszprunar, 1987
- Superorder Heterobranchia Haszprunar, 1985
- Superorder Caenogastropoda Cox, 1960
- Order Architaenioglossa Haller, 1892
- Order Sorbeoconcha Ponder & Lindberg, 1997
- Subordination Discopoda P. Fischer, 1884
- Suborder Hypsogastropoda Ponder & Lindberg, 1997
- Partial order Littorinimorpha Golikov & Starobogatov, 1975
- Partial order Ptenoglossa J.E. Gray , 1853
- Partial order Neogastropoda Thiele , 1929
literature
- Philippe Bouchet, Jean-Pierre Rocroi: Part 2. Working classification of the Gastropoda. In: Malacologia. 47: 239-283, Ann Arbor 2005 ISSN 0076-2997 , archive.org , ConchBooks, ISBN 978-3-925919-72-5 .
- Victor Millard (Ed.): Classification of the Mollusca. A Classification of World Wide Mollusca. Rhine Road, South Africa 1997, ISBN 0-620-21261-6 , online (PDF; 2.46 MB), at olivirv.myspecies.info, accessed February 25, 2017.
- Winston Ponder & David Lindberg : Towards a phylogeny of gastropod molluscs; an analysis using morphological characters. Zoological Journal of the Linnean Society, 119: 83-265, London 1997 ISSN 0024-4082 , doi: 10.1111 / j.1096-3642.1997.tb00137.x .
Web links
- Tree of Life
- Paul Jeffery: Gastropod Classification. (No longer available online.) Archived from the original on June 24, 2008 ; accessed on March 1, 2013 .
- Caenogastropoda in the Mineral Atlas
- Comparative Toxicogenomics Database