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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