plural noun

• A group of mollusks which includes the land snails and slugs and many freshwater snails. They have a modified mantle cavity which acts as a lung for breathing air.

  Subclass Pulmonata, class Gastropoda

  ‘The latter group includes radically modified animals, the Opisthobranchia and Pulmonata, which undergo detorsion and essentially re-evolve bilateral symmetry.’

  More example sentences

  • ‘In the traditional classification system, the class Gastropoda has been divided into three subclasses, Prosobranchia, Pulmonata, and Opisthobranchia.’
  • ‘Haszprunar and Bandel suggested a subdivision of the Heterostropha into the Allogastropoda and Euthyneura, with the Euthyneura including the Opisthobranchia and Pulmonata.’