Phylum Mollusca Linnaeus, 1758 - molluscs
   Class Bivalvia Linnaeus, 1758 - bivalves
     Subclass Protobranchia Pelseneer, 1889
       Order Nuculida Dall, 1889
         Superfamily Nuculanoidea Adams & Adams, 1858 (1854)
           Family Yoldiidae Dall, 1908
             Subfamily Yoldiellinae Allen & Hannah, 1986
               1 Genus Yoldiella Verrill & Bush, 1897
               2 Genus Adranella Verrill & Bush, 1898
               3 Genus Ovaleda Iredale, 1925
               4 Genus Portlandia Mörch, 1857
               5 Genus Sarepta Adams, 1860
               6 Genus Scissileda Kilburn, 1994