Basommatophora n. pl. : A group of Pulmonifera having the eyes at the base of the tentacles, including the common pond snails.

Example:


Taxonomy
Family, Basommatophora, taxonomy, informal group, Superfamily, Rafinesque, free encyclopedia, species, Thiele, subfamily, snails, clade, Family Physidae, family Ancylidae, air-breathing, Members of the family, suborder, Lymnaeidae.

Defination from the web:
Basommatophora is a taxonomic informal group of snails within the informal group Pulmonata, the air-breathing slugs and snails. ... The informal group Basommatophora contains the following superfamilies and the clade Hygrophila (according to the Taxonomy of the Gastropoda (Bouchet ...