| Gastropoda: Pulmonata |
||
| Mollusca | Systellommatophora |
Pulmonata
└─► |
|||
None |
Mollusca |
|
Abbreviated Dendrogram
Gastropoda
├─Caenogastropoda
└─Heterobranchia
├─Opisthobranchia
│
└─Pulmonata
╞═Basommatophora
└─┬─Stylommatophora
└─┬─Systellommatophora
╘═Acteophila
|
Contents
Overview |
The Systellommatophora include several families of slug-like animals that have been continuously shuffled from one taxon to another (Chase, 2002), but don't seem to fit in either the Basommatophora and Stylommatophora. All have the anus located at the posterior end of the body, but the intertidal Onchidiidae have a posterior pulmonary sac, while the tropical Veronicellidae have lost the pulmonate lung. Barnes 1980).
The Systellommatophora are considered a polyphyletic taxon by Wade & Mordan (2000).
The following classification is from Jeffery 2001
page uploaded 20 December 2002
checked ATW040201
page by M. Alan Kazlev (Creative Commons License)
unless otherwise indicated by copyright notice, this material may be freely used if attribution is given