Thus, the Caenogastropoda are recognized as containing the Architaenoglossa and the Sorbeoconcha.
The Architaenoglossa include the Ampullarioidea and Cyclophoroidea, and the Sorbeoconcha consist of the Cerithiomorpha, Littorinimorpha, Ptenoglossa, and Neogastropoda.
In the Sorbeoconcha, pallial cavity water flow is driven by the large, ciliated osphradium, as well as by the ctenidium.
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