AbstractNew phylogenetic hypotheses of adaptive radiation in Gastropoda and basic gastropod organization are discussed. Gastropods on land i.e. Archaeogastropod Neritopsina, Architaeniglossan caenogastropods, Sorbeoconch caenogastropods, Ellobioid pulmonates, Onchidioidean pulmonates, Rathouisioidean pulmonates, Succineoidean pulmonates and Stylommatophoran pulmonates.