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3 Cards in this Set
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Subclass Opisthobranchia |
no specimens, fully marine, no shell, external gills or just one gill, sea slugs |
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Subclass Pulmonata |
have lungs, freshwater, have shells |
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Subclass Prosobranchia |
all consequent organisms are under this subclass, one shell, has an operculum for sealing the shell divided into three orders: Archaeogastropoda, Caenogastropoda, Neogastropoda |
