Sorbeoconcha

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Sorbeoconcha
Atlantic triton snail (Charonia nobilis) eats a starfish

Atlantic triton snail ( Charonia nobilis ) eats a starfish

Systematics
Trunk : Molluscs (mollusca)
Sub-stem : Shell molluscs (Conchifera)
Class : Snails (gastropoda)
Subclass : Orthogastropoda
Superordinate : Caenogastropoda
Order : Sorbeoconcha
Scientific name
Sorbeoconcha
Ponder & Lindberg , 1997

The Sorbeoconcha ( "Sauggehäuseschnecken" ) are originally a group of indefinite rank within the snails (Gastropoda), which was first established by Ponder and Lindberg in 1997. It is a subgroup of the Caenogastropoda (and sister group of the Architaenioglossa ); it contains most of the species of Caenogastropoda. In Systema Naturae 2000 the group is assigned a level of order.

characterization

The Sorbeoconcha are characterized by a flow of respiratory water that mainly flows into the mantle cavity. Hence the name Sorbeoconcha (Latin sorbere = to suck in, concha = bowl, housing). In other gastropod groups, the main stream tends to flow out. In addition, Ponder & Lindberg (1997) list ten further, presumably apomorphic, features from the feature range of the protoconch , the radula, the genital apparatus and the nervous system, as well as the shape of the osphradium .

Breakdown

Ponder & Lindberg (1997) do not subdivide the group strictly in the Linneisch-hierarchical sense, but phylogenetically. You only speak of a "clade", ie a branch. Bouchet & Rocroi (2005) do not assign any rank to the group either. It was not until the “Systema Naturae 2000” (based on de Bruyne, 2003?) That the “branches” of the phylogenetic system by Ponder and Lindberg (1997) assigned linneisch-hierarchical ranks. The Caenogastropoda is assigned superordinate rank, the Sorbeoconcha ordinal rank.

However, this classification is based on the phylogenetic analysis of Ponder & Lindberg z. T. not covered. For example, the "subordination" Discopoda is paraphyletic. The Neogastropoda (in the sense of Ponder and Lindberg) are also problematic because they include the Provannidae family and are therefore paraphyletic.

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 1997 ISBN 0-620-21261-6
  • 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

Individual evidence

  1. ↑ Suction casing screws at: aquanet.de ( Memento of the original from September 6, 2012 in the Internet Archive ) Info: The archive link has been inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. @1@ 2Template: Webachiv / IABot / www.aquanet.de
  2. ↑ Systema Naturae 2000
  3. ^ RH de Bruyne: Geïllustreerde Schelpen Encyclopedie. 336 S., Rebo Productions bv, Lisse 2003. The work could not yet be viewed.

Web links

Commons : Sorbeoconcha  - collection of images, videos and audio files