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 Neilonellidae Schileyko, 1989
             1 Genus Neilonella Dall, 1881
             2 Genus Neilo Adams, 1854
             3 Genus Protonucula Cotton, 1930
             4 Genus Pseudotindaria Sanders & Allen, 1977