Viviparoidea
Introduction '''Viviparoidea'''  is a taxonomic superfamily of freshwater snails, aquatic gastropod mollusks within the informal group Architaenioglossa, which belongs to the clade Caenogastropoda.The following two families have been recognized in the taxonomy of Bouchet & Rocroi (2005):* Family Viviparidae* † Family Pliopholygidae
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