Phylum Mollusca Linnaeus, 1758 - molluscs
Status: extant
   Conchifera Gegenbaur, 1878 see Subphylum Conchifera Gegenbauer, 1878
  Status: extant
     1 Class Monoplacophora Odhner, 1940 - monoplacophorans
    Status: extant
     2.1 †Rostroconchia Cox, 1960 see Class Rostroconchia Pojeta et al., 1972
    Status: fossil
     2.2 Class Bivalvia Linnaeus, 1758 - bivalves
    Status: extant
     3 Class Scaphopoda Bronn, 1862 - tusk shells
    Status: extant
     4 Cyrtosoma
    Status: extant