Acavoidea
Introduction The '''Acavoidea''' are a taxonomic superfamily of air-breathing land snails and slugs, terrestrial pulmonate gastropod mollusks in the informal group Sigmurethra.This taxonomy was based on the study by Nordsieck, published in 1986.
Taxonomy Families within the superfamily Acavoidea are as follows:*Family Acavidae  Pilsbry, 1895 *Family Caryodidae  Conolly, 1915 *Family Dorcasiidae  Conolly, 1915 *Family Macrocyclidae  Thiele, 1926 *Family Megomphicidae  H.B. Baker, 1930 *Family Strophocheilidae  Pilsbry, 1902
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