Phylum Mollusca Linnaeus, 1758 - molluscs
   Class Bivalvia Linnaeus, 1758 - bivalves
     Subclass Anomalodesmata Dall, 1889 [monotypic] see Order Anomalodesmata Dall, 1889
       Order Pholadomyida Newell, 1965
         Suborder Clavagellina Newell, 1965 [monotypic] see Superfamily Clavagelloidea d'Orbigny, 1844
           Superfamily Clavagelloidea d'Orbigny, 1844 [monotypic]
             Family Clavagellidae d'Orbigny, 1844, nom. protect.
               Genus Penicillus Bruguière, 1789, nom. illeg.
                 Subgenus Foegia Gray, 1842