CLASS GASTROPODA
Order Patellogastropoda Superfamily Lottioidea Lottiidae Acmaeidae Lepetidae Superfamily Nacelloidea Nacellidae Superfamily Patelloidea Patellidae Order Cocculiniformia Superfamily Lepetelloidea Addisoniidae Order Neritoida Superfamily Neritoidea Neritidae Neritopsidae Phenacolepadidae Order Neomphalida Superfamily Neomphaloidea Neomphalidae Order Vetigastropoda Superfamily Pleurotomarioidea Pleurotomariidae Scissurellidae Haliotidae Superfamily Fissurelloidea Fissurellidae Superfamily Trochoidea Trochidae Trochinae Calliostomatinae Stomatellinae Turbinidae Turbininae Angariinae Liotiinae Phasianellinae Skeneidae Superfamily Seguenzioidea Seguenziidae Order Caenogastropoda Suborder Neotaenioglossa Infraorder Discopoda Superfamily Loxonematoidea Abyssochrysidae Superfamily Cerithioidea Campanilidae Diastomatidae Dialidae Litiopidae Obtortionidae Scaliolidae Cerithiidae Cerithideidae Potamididae Batillariidae Fossaridae Planaxidae Modulidae Turritellidae Siliquariidae Superfamily Vermetoidea Vermetidae Superfamily Littorinoidea Littorinidae Skeneopsidae Superfamily Cingulopsoidea Cingulopsidae Eatoniellidae Superfamily Rissooidea Anabathridae Barleeidae Emblandidae Caecidae Elachisinidae Epigridae Falsicingulidae Iravadiidae Rissoidae Assimineidae Truncatellidae Tornidae Vitrinellidae Superfamily Stromboidea Aporrhaidae Strombidae Struthiolariidae Seraphidae Superfamily Xenophoroidea Xenophoridae Superfamily Calyptraeoidea Calyptraeidae Capulidae Superfamily Vanikoroidea Vanikoridae Hipponicidae Superfamily Cypraeoidea Cypraeidae Ovulidae Ovulinae Eocypraeinae Superfamily Velutinoidea Triviidae Triviinae Eratoinae Velutinidae Superfamily Naticoidea Naticidae Superfamily Tonnoidea Cassidae Bursidae Personidae Ranellidae Ficidae Tonnidae Laubierinidae Infraorder Heteropoda Superfamily Carinarioidea Atlantidae Carinariidae Infraorder Ptenogloss Superfamily Triphoroidea Triphoridae Cerithiopsidae Triforidae Superfamily Epitonioidea Epitoniidae Aclididae Janthinidae Superfamily Eulimoidea Eulimidae Suborder Neogastropoda Superfamily Muricoidea Muricidae Muricinae Thaidinae Coralliophilinae Turbinellidae Turbinellinae Columbariinae Vasinae Buccinidae Fasciolariidae Melongenidae Nassariidae Columbellidae Harpidae Harpinae Moruminae Marginellidae Cystiscidae Pleioptygmatidae Mitridae Costellariidae Olividae Olivinae Ancillinae Volutidae Volutomitridae Superfamily Cancellarioidea Cancellariidae Superfamily Conoidea Conidae Terebridae Turridae Turrinae Borsoniinae Cochlespirinae Crassispirinae Daphnellinae Drilliinae Mangeliinae Order Heterostropha Superfamily Valvatoidea Orbitestellidae Superfamily Rissoelloidea Rissoellidae Superfamily Omalogyroidea Omalogyridae Superfamily Architectonicoidea Architectonicidae Mathildidae Superfamily Pyramidelloidea Pyramidellidae Amathinidae Order Opisthobranchia Suborder Cephalaspidea Superfamily Ringiculoidea Ringiculidae Superfamily Acteonoidea Acteonidae Bullinidae Hydatinidae Superfamily Philinoidea Philinidae Cylichnidae Superfamily Retusoidea Retusidae Superfamily Diaphanoidea Diaphanidae Superfamily Bulloidea Bullidae Superfamily Haminoeoidea Haminoeidae Superfamily Cylindrobulloidea Cylindrobullidae Suborder Anaspidea Superfamily Aplysioidea Aplysiidae Akeridae Suborder Sacoglossa Superfamily Julioidea Juliidae Superfamily Oxynooidea Oxynoidae Volvatellidae Suborder Notaspidea Superfamily Umbraculoidea Umbraculidae Tylodinidae Suborder Thecosomata Infraorder Euthecosomata Superfamily Limacinoidea Cavoliniidae Limacinidae Infraorder Pseudothecosomata Superfamily Cymbulioidea Peraclidae Order Pulmonata Suborder Archaepulmonata Superfamily Ellobioidea Ellobiidae Suborder Basommatophora Superfamily Amphiboloidea Amphibolidae Superfamily Siphonarioidea Siphonariidae Trimusculidae
Order Patellogastropoda
Order Cocculiniformia
Order Neritoida
Order Neomphalida
Order Vetigastropoda
Order Caenogastropoda
Order Heterostropha
Order Opisthobranchia
Order Pulmonata
* At this time, only shelled marine mollusks are included in this classification scheme. The other types of mollusks will be added at a later date.
The above material has been adapted from Dr. Rosenberg's The Encyclopedia of Seashells, published by Robert Halt, Ltd., London, 1992.
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