NMFS-PGC    Taxonomic Description
---------------------------------------------------------------
 4260000
 4260000          ----- ONYCHOPHORA ----------
 4262500
 4262500    Atlantidae                                 (ITIS:  72838)
 4262500    Carinariidae                               (ITIS:  72856)
 4262500    Gastropoda                                 (ITIS:  69459)
 4262500    Thecosomata                                (ITIS:  76333)