Acteocinidae Dall, 1913 accepted as
Tornatinidae P. Fischer, 1883 (status source)
Alacuppidae Oskars, Bouchet & Malaquias, 2015 (original description)
Bulloidea Gray, 1827 (basis of record)
Cephalaspidea (taxonomy source)
Cylichnidae H. Adams & A. Adams, 1854 (status source)
Diaphanidae Odhner, 1914 (1857) (status source)
Diaphanoidea Odhner, 1914 (1857) accepted as
Cylichnoidea H. Adams & A. Adams, 1854 (additional source)
Haminoeidae Pilsbry, 1895 (additional source)
Haminoeoidea Pilsbry, 1895 (status source)
Laona A. Adams, 1865 (status source)
Laona quadrata (S. V. Wood, 1839) (new combination reference)
Laonidae Pruvot-Fol, 1954 (status source)
Philinidae J. E. Gray, 1850 (1815) (status source)
Philinoidea J. E. Gray, 1850 (1815) (taxonomy source)
Philinorbidae Oskars, Bouchet & Malaquias, 2015 (original description)
Retusidae Thiele, 1925 (basis of record)
Rhizoridae Dell, 1952 (status source)
Scaphandridae G. O. Sars, 1878 (status source)
Taxonomy
Originally described as a subfamily of the Diaphanidae and considered as such by most authors (e.g. Schiøtte, 1998; ... [details]