After Waller, 1998 (from Kazlev, 2002a)
<==o Mollusca (molluscs; nilviäiset) |--o Aplacophora (piilojalkaiset) [c. 150 species] | |-- Solenogastres (matonilviäiset) | `--o Caudofoveata [Crystallophrissonidea; Chaetodermatidea] | |-- Limifossoridae | |-- Prochaetodermatidae | `-- Chaetodermatidae [incl. Crystallophrissonidae] `--o Testaria |-- Polyplacophora (nivelkotilot, kitonit) `--o Conchifera |?=o †Heliconelloida [incl. Kirengellida Rosov, 1975] | |?- †Scenellidae | |-- †Yochelcionellidae | |-- †Stenothecidae | `--o †Helcionellidae | |-- †Chuiliella Gubanov & Peel, 2001 | |--o †Nyuella | | `-- †N. bjalyi Rosov, 1975 | `--o †Pollicina Holzapfel, 1895 | `-- †P. corniculum (Eichwald, 1860) [taxonomic history] |-- Tryblidiida [Monoplacophora sensu stricto] `--+--o Diasoma | |-- †Stenothecida | `--+-- †Rostroconchia | `-- Bivalvia [Pelycopoda; Lamellibranchia] (shellfishes; simpukat) `--o Cyrtosoma |?=o †Tergomya | |?- †Cyrtonellida Horný, 1963 | `--o †Hypseloconida | `?-o †Hypseloconidae | |?- †Archaeconus | |?- †Cambrioconus | |?- †Knightoconus | `?- †Hypseloconus |-- Gastropoda Cuvier, 1797 (snails; kotilot) `--+-- Scaphopoda (hammaskotilot) |?- †Cricoconarida `-- Cephalopoda (cephalopods, i.e. ammonites, squids & octopods; mustekalat, pääjalkaiset)
Reference(s):
- Evans, D. H. & Cope, J. C. W., 2003: Systematic position of Pollicina corniculum (Eichwald, 1860) (Mollusca, Tergomya) from the Middle Ordovician of the United Kingdom.
–Palaeontology: Vol. 46, #1, pp. 139-149 - Kazlev, M. A., 2002a: Phylum Mollusca.
–iNet: The Palaeos: http://www.palaeos.org/mollusca - Kazlev, M. A., 2002b: Class Rostroconchia.
–iNet: The Palaeos: http://www.palaeos.org/rostroconchia - Parker, S. P. (ed.), 1982:
Synopsis and classification of living organisms. Vols. 1 & 2
–McGrew-Hill Book Company - Wagner, P. J., 2002 [1995]: Phylogenetic relationships of the earliest anisostrophically coiled gastropods.
–Smithsonian Contributions to Paleobiology: Vol. 88, pp. vi-152