meaning of pulmonata
1. An extensive division, or sub-class, of hermaphrodite gastropods, in which the mantle cavity is modified into an air-breathing organ, as in Helix, or land snails, Limax, or garden slugs, and many pond snails, as Limnaea and Planorbis.
2. large order of gastropods usually breathing by means of a lung-like sac comprising most land snails and slugs and many freshwater snails
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