Sorbeoconcha
Atlantic Triton snail ( Charonia nobilis) feeding on a sea star
The Sorbeoconcha ( " Sauggehäuseschnecken " ) were originally a group of indeterminate rank within the snails ( Gastropoda ), which has been set up recently by Ponder and Lindberg 1997. It is a subset of the Caenogastropoda ( and sister group of Architaenioglossa ); it contains most of the types of Caenogastropoda. Systema Naturae in 2000, the group order ranking is assigned.
Characterization
The Sorbeoconcha are characterized by a mainly flowing into the mantle cavity, respiratory water flow. Hence the name Sorbeoconcha stirred (lat. = sorbere into eyes, concha = shell, housing) ago. In other Gastropodengruppen the main power is rather out fluently. In addition, Ponder & Lindberg (1997) lists ten nor more, presumably apomorphic features from the feature region of Protoconchs, the radula, the genital apparatus and the nervous system as well as in the form of Osphradiums.
Subdivision
The group is divided by Ponder & Lindberg (1997 ) is not strictly in Linneisch - hierarchical sense, but phylogenetically. They only speak of a " clade ", ie branch. Also Bouchet & Rocroi (2005 ) indicate the group to no rank. Only the Systema Naturae 2000 ( based on de Bruyne, 2003? ) Has the " branches " of the phylogenetic system of Ponder and Lindberg (1997) linneisch - hierarchical ranks to. The Caenogastropoda is thereby assigned to superorder rank, the rank order Sorbeoconcha.
- Superorder Caenogastropoda Ponder & Lindberg order Sorbeoconcha, 1997 Subordination Discopoda P. Fischer, 1884 Superfamily Cerithioidea Fleming, 1822
- Superfamily Campaniloidea Douville, 1904
- Partial order Littorinimorpha Golikov & Starobogatov, 1975
- Partial order Ptenoglossa J. E. Gray, 1853
- Partial order Neogastropoda Thiele, 1929
The distinction is, however, not covered by the phylogenetic analysis of Ponder & Lindberg, in part. For example, the " subordination " Discopoda is paraphyletic. The Neogastropoda ( within the meaning of Ponder and Lindberg ) are problematic because they are the family Provannidae with include and thus paraphyletic.