- Source: Eupulmonata
Eupulmonata is a taxonomic clade of air-breathing gastropod molluscs. The great majority of this group are land snails and slugs, but some are intertidal or inhabit coastal saltmarshes and mangroves.
Possible synapomorphy of the group are globineurons (small cells) in the procerebrum.
Eyes positioned on the tips of the tentacles were considered a synapomorphy of a clade named Geophila (Stylommatophora + Systellommatophora), but a 1972 phylogenomic study found strong support for a clade uniting Ellobioidea (eyes at the base of tentacles) and Systelommatopohra (eyes on the tentacle tips). Stalked eyes thus likely evolved twice independently.
Taxonomy
Source:
Order Ellobiida
Superfamily Ellobioidea L. Pfeiffer, 1854
Ellobiidae L. Pfeiffer, 1854
Otinidae H. Adams & A. Adams, 1855
Trimusculidae J. Q. Burch, 1945
Order Systellommatophora
Superfamily Onchidioidea Rafinesque, 1815
Onchidiidae Rafinesque, 1815
Superfamily Veronicelloidea Gray, 1840
Veronicellidae Gray, 1840
Rathouisiidae Heude, 1885
Order Stylommatophora
(for inner division, see the Stylommatophora page)