Kingdom Animalia Linnaeus, 1758 - animals
   Phylum Sipuncula Rafinesque, 1814 - peanut worms see Class Sipuncula
     Class Sipunculida DeBlainville, 1828 see Subclass Sipunculida
       Order Golfingiaformes
         1 Family Themistidae E. Cutler & Gibbs, 1985
         2 Family Phascolionidae E. Cutler & Gibbs, 1985
         3 Family Golfingiidae Stephen & Edmonds, 1972