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After Parker, 1982
<==o GASTROPODA Cuvier, 1797 (kotilot) |--o PROSOBRANCHIA (etukiduskotilot) | |-- "ARCHAEOGASTROPODA" Thiele, 1925 (kaksieteiskotilot) [paraphyletic grade of basal gastropods] | |-- MESOGASTROPODA (leveäkielikotilot) | `-- NEOGASTROPODA (kapeakielikotilot) |-- OPISTHOBRANCHIA (takakiduskotilot) `--o PULMONATA (keuhkokotilot) |--o ARCHAEOPULMONATA (alkukeuhkokotilot) | `--o ELLOBIACEA* [+Actophila] | `-- Ellobiidae [+Auriculidae, Otinidae] (pääsilmäkotilot) `--+-- BASOMMATOPHORA (vesikeuhkokotilot) `--+-- STYLOMMATOPHORA (maakeuhkokotilot 1) `-- SYSTELLOMMATOPHORA (maakeuhkokotilot 2)
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
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