Apogastropoda

Examples of Apogastropoda

The Apogastropoda ( altgr. ἀπό = off, thereof;. AltGr γαστήρ = belly, stomach; gr.πόδι = leg, foot) form a taxon in the scheme of Biology ( molluscs, snails). It combines the phylogenetic sister groups of Caenogastropoda and Heterobranchia. The taxon was made known in 1987. In the scheme of Ponder & Lindberg (1997 ), it is represented as a subclass of the subclass of Orthogastropoda. In the taxonomy of Bouchet & Rocroi (2005) the taxon is omitted again.

Description

Belonging to this taxon Gastropoda have branched tentacular nerve and two connecting strands.

System

According to Ponder & Lindberg (1997) and the Caenogastropoda Heterobranchia form in the phylogenetic system of sister groups and were monophyletic for Apogastropoda united.

The Apogastropoda arrange themselves in the taxonomy of Ponder & Lindberg (1997) as follows:

  • Subclass Orthogastropoda ( True snails) WF Ponder & D. R. Lindberg, 1996 Subclass Apogastropoda, L. Salvini - Plawen & G.Haszprunar, 1987 Superorder Caenogastropoda, Cox, 1960 Order Architaenioglossa, Haller, 1890
  • Order Sorbeoconcha, W. F. Ponder & D. R. Lindberg, 1997
  • Order heterostropha, (miscellaneous rotator ) P.H. Fischer, 1885
  • Order Opisthobranchia ( opisthobranch ), A. Milne -Edwards, 1848
  • Order Pulmonata ( snails ), G. Cuvier in HMD de Blainville, 1814

In the more recent taxonomy of Bouchet & Rocroi (2005) the taxon Apogastropoda is not used anymore. It is considered obsolete due to molecular biological reasons.

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