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Mollusca (132 848)
Subphylum Aculifera
Subphylum Conchifera
Subphylum Placophora accepted as Polyplacophora
Superclass Aplacophora
Class Amphineura accepted as Aculifera
Class Bivalvia (25 011)
Class Caudofoveata (143)
Class Cephalopoda (1 834)
Class Conchifera accepted as Bivalvia
Class Cricoconarida † (1)
Class Gastropoda (102 752)
Subclass Amphigastropoda † (396)
Suborder Liljevallospiroidei † accepted as Bellerophontoidea F. McCoy, 1852 †
Superfamily Bellerophontoidea F. McCoy, 1852 † (396)
Family Bellerophontidae McCoy, 1852 † (253)
Family Bellerophontoidea incertae sedis † (7)
Family Bucanellidae Koken, 1925 † (12)
Family Bucaniidae Ulrich & Scofield, 1897 † (44)
Family Cymbulariidae Horný, 1963 † accepted as Cymbulariinae Horný, 1963 †
Family Euphemitidae Knight, 1956 † (35)
Genus Euphemites Warthin, 1930 † (19)
Species Euphemites aequisulcatus Chronic, 1952 †
Species Euphemites angustus Nechaev & Likharev, 1956 †
Species Euphemites batteni Yochelson, 1960 †
Species Euphemites circumcostatus Walter, 1953 † accepted as Euphemitopsis circumcostatus (Walter, 1953) †
Species Euphemites crenulatus Yochelson, 1960 †
Species Euphemites enodis Sturgeon, 1964 †
Species Euphemites exquisitus Yochelson, 1960 †
Species Euphemites graffhami R. C. Moore, 1941 †
Species Euphemites guizhouensis H.-Z. Pan, 1982 † accepted as Retispira guizhouensis (H.-Z. Pan, 1982) †
Species Euphemites imperator Yochelson, 1960 †
Species Euphemites kingi Yochelson, 1960 †
Species Euphemites labrosa Campbell & Engel, 1963 † accepted as Euphemites labrosus Campbell & Engel, 1963 †
Species Euphemites labrosus Campbell & Engel, 1963 †
Species Euphemites lentiformis (Weller, 1916) †
Species Euphemites luxuriosus Yochelson, 1960 †
Species Euphemites maanqiaoensis X.-D. Qiao, 1983 †
Species Euphemites melanicus X.-D. Qiao, 1983 †
Species Euphemites minutus W. G. H. Maxwell, 1961 †
Species Euphemites multiliratus Sturgeon, 1964 †
Species Euphemites nevadensis M. Gordon & Yochelson, 1983 †
Species Euphemites nodocarinatus (J. Hall, 1858) †
Species Euphemites pustula Yoo, 1994 † accepted as Euphemites pustulus Yoo, 1994 †
Species Euphemites pustulus Yoo, 1994 †
Species Euphemites randolphensis (Weller, 1920) †
Species Euphemites sparcilliratus Yochelson, 1960 †
Species Euphemites tongxinensis F. Guo, 1983 †
Species Euphemites urei (Fleming, 1828) †
Species Euphemites yarkangheensis X.-D. Qiao, 1983 †
Species Euphemites yidunensis Y.-T. Pan, 1978 †
Species Euphemites yinganensis X.-D. Qiao, 1983 †
Genus Euphemitopsis Yochelson, 1960 † (3)
Genus Euphemus McCoy, 1844 † accepted as Euphemites Warthin, 1930 †
Genus Stachella W. H. Waagen, 1880 † (1)
Genus Warthia W. H. Waagen, 1880 † (12)
Family Grandostomatidae Horný, 1962 † accepted as Bucaniinae Ulrich & Scofield, 1897 †
Family Liljevallospiridae Golikov & Starobogatov, 1989 † accepted as Bellerophontidae McCoy, 1852 †
Family Protowarthiidae Ulrich & Scofield, 1897 † accepted as Sinuitinae Dall, 1913 †
Family Pterothecidae P. Fischer, 1883 † (5)
Family Sinuitidae Dall, 1913 † (18)
Family Tremanotidae Naef, 1913 † (3)
Family Tropidodiscidae Knight, 1956 † (19)
Subfamily Bucanellinae Koken, 1925 † accepted as Bucanellidae Koken, 1925 †
Subfamily Euphemitinae Knight, 1956 † accepted as Euphemitidae Knight, 1956 †
Subclass Angiogastropoda represented as Gastropoda
Subclass Apogastropoda
Subclass Caenogastropoda (53 669)
Subclass Gastropoda incertae sedis (308)
Subclass Heterobranchia (39 172)
Subclass Neomphaliones accepted as Vetigastropoda
Subclass Neritimorpha (1 914)
Subclass Orthogastropoda represented as Gastropoda
Subclass Patellogastropoda (511)
Subclass Prosobranchia
Subclass Psilogastropoda represented as Gastropoda
Subclass Vetigastropoda (6 782)
Class Lamellibranchiata accepted as Bivalvia
Class Loricata accepted as Polyplacophora
Class Mollusca incertae sedis † (372)
Class Monoplacophora (229)
Class Pelecypoda accepted as Bivalvia
Class Polyplacophora (1 377)
Class Polyplaxiphora accepted as Polyplacophora
Class Rostroconchia † (64)
Class Scaphopoda (752)
Class Solenoconchia accepted as Scaphopoda
Class Solenogastres (313)
Subclass Chaetodermomorpha accepted as Caudofoveata