Mollusca Linnaeus, 1758 - molluscs see Phylum Mollusca Linnaeus, 1758
   Superfamily †Bellerophontoidea McCoy, 1852, incertae sedis
     Family †Pterothecidae Fischer, 1883
       1 Subfamily †Pterothecinae Fischer, 1883
       2 Subfamily †Carinaropsinae Ulrich & Scofield, 1897
       3 Subfamily †Pedasiolinae Wahlman, 1992