Phylum Mollusca Linnaeus, 1758 - molluscs
   Class Gastropoda Cuvier, 1795 - snails and slugs
     Subclass Opisthobranchia Milne-Edwards, 1848 - opisthobranchs see Order Opisthobranchia Milne-Edwards, 1848
       Order Cephalaspidea Fischer, 1883
         Superfamily Acteonoidea d'Orbigny, 1843
           Family Aglajidae Pilsbry, 1895 (1847)
             1 Genus Aglaja Renier, 1807
             2 Genus Chelidonura Adams, 1850
             3 Genus Melanochlamys Cheesman, 1881
             4 Genus Nakamigawaia Kuroda & Habe, 1961
             5 Genus Odontoglaja Rudman, 1978
             6 Genus Philinopsis Pease, 1860