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Abbreviated Dendrogram
MOLLUSCA |--ACULIFERA `--CONCHIFERA `==Helcionelloida `--+--Bellerophontoidea `--GASTROPODA (crown group) |==Eogastropoda (paraphyletic or polyphyletic) | |?--Macluritoidea | |?--Euomphaloidea | `--Patellogastropoda `--Orthogastropoda |--Vetigastropoda |--Neritimorpha `--+--Caenogastropoda `--Heterobranchia |--Opisthobranchia `--Pulmonata |
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Gastropod phylogeny is in near total dissaray. For organizational
purposes only, we will follow this cladogram:
Helcionelloida (paraphyletic) |==Rostroconchia | `--Scaphopoda |--Bivalvia `--+--Paragastropoda | |--Pelagiellida (= Pelagielloidea) | `--Mimospirida (= Onychochiloidea) `--+--Tergomya (paraphyletic) |-?Bellerophontoidea? `--Gastropoda (crown group) |--Eogastropoda | `--Euomphalida (=-na?) | |?--Macluritoidea | `--+--Euomphaloidea | `--Patellogastropoda (stem group) | `--Metoptomatidae `--Orthogastropoda ?= Sinuopeidae) |-? Murchisoniida |--Neritopsina | |--Neritoida | `--+--Cocculinoidea | `--Vetigastropoda `--APOGASTROPODA |--Caenogastropoda | |--Architaenioglossa | `--Sorbeoconcha | |--Neogastropoda | `--everything else `--HETEROBRANCHIA |--Opisthobranchia | |--Sacoglossa | `--+--Cephalaspidea (followed by various others) | `--Nudibranchia `--PULMONATA |--Systellommatophora `--+--Basommatophora `--+--Acteophila `--Stylommatophora
This scheme reflects some elements found in the following references:
Grande, C, J Templado, JL Cervera & R Zardoya (2004), Molecular phylogeny of Euthyneura (Mollusca: Gastropoda). Mol. Biol. Evol. 21: 303–313. WWW
Ponder, WF & DR Lindberg (1997), Towards a phylogeny of gastropod molluscs: Analysis using morphological characters. Zool. J. Lin. Soc. 119: 83-265.
Sasaki, T (1998), Comparative anatomy and phylogenyof the Recent Archaeogastropoda (Mollusca: Gastropoda). Univ. Tokyo Mus. Bull. No. 38, ??pp. WWW
A fuller classification, which has not yet been converted to a proper cladogram format, shows the relationships of various recent and fossil groups according to a Linnaean format.
Class GASTROPODA INCERTÆ SEDIS INCERTÆ SEDIS Pragoscutulidae Frýda, 1998 Pragoserpulinidae Frýda, 1998 Order MIMOSPIRINA Onychochiloidea Subclass EOGASTROPODA Order EUOMPHALINA Ophiletoidea Euomphaloidea Platyceratoidea Order DOCOGLOSSA [=PATELLOGASTROPODA ] Subclass ORTHOGASTROPODA INCERTÆ SEDIS Order MURCHISONIINA {fide Wagner, undated} Murchisonioidea Loxonematoidea Lophospiroidea [=Trochonematacea & Eotomarioidea] Grade Subulitoidea Superorder NERITOPSINA [=NERITIMORPHA] Order CYRTONERITIMORPHA Orthonychiidae Bandel & Frýda, 1999 (euomphalid like???) Vltaviellidae Bandel & Frýda, 1999 (euomphalid like???) Order NERITOIDA [=CYCLONERITIMORPHA] Neritoidea Symmetrocapuloidea ?Peltospiroidea ?Palaeotrochoidea Order Neomphalida Neomphaloidea Superorder VETIGASTROPODA Superorder COCCULINIFORMIA Infraclass APOGASTROPODA Superorder CAENOGASTROPODA INCERTÆ SEDIS Incertæ sedis Ladinulidae Bandel, 1992 Lanascalidae Bandel, 1992 Popenellidae Bandel, 1992 Prostyliferidae Bandel, 1992 Settsassiidae Bandel, 1992 Pseudomelanioidea Pseudomelaniidae Fischer, 1885 [=Trajanellidae Pchelintsev, 1953] Order ARCHITAENIOGLOSSA Order SORBEOCONCHA {Cerithioidea to Buccinoidea} ?Spanionematoidea Golikov & Starobogatov, 1987 Cerithioidea Campaniloidea [=suborder Campanilimorpha] Campanilidae Douvillé, 1904 Plesiotrochidae Houbrick 1990 Suborder HYPSOGASTROPODA {Calyptraeoidea to Buccinoidea} [LATROGASTROPODA Riedel, 2000] ?Superfamily ?Weeksiidae Sohl, 1960 infraorder LITTORINIMORPHA infraorder PTENOGLOSSA infraordinal grade NEOGASTROPODA Superorder HETEROBRANCHIA {TRIGANGLIONATA to EUTHYNEURA} [=HETEROSTROPHA sensu Bandel] INCERTÆ SEDIS Incertæ sedis Dolomitellidae Bandel, 1994 {Triassic} Misurinellidae Bandel, 1994 {Triassic} Zardinellidae Bandel, 1994 {Triassic} Ordinal Grade TRIGANGLIONATA [=ALLOGASTROPODA, & HETEROSTROPHA ] Intraorder EUTHYNEURA {OPISTHOBRANCHIA + PULMONATA - monophyletic fide Yoon & Kim, 2000 and Wade & Mordan, 2000} Ordinal Grade OPISTHOBRANCHIA[=OPISTHOBRANCHIATA] Order PULMONATA
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page uploaded 22 December 2002
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