Annelida Lamarck, 1809 - segmented worms
   "polychaetes" see Class Polychaeta Grube, 1850
     Scolecida G.W. Rouse & K. Fauchald, 1997 see Order Scolecida Rouse & Fauchald, 1997
       Family Opheliidae Malmgren, 1867
         Genus Proscalibregma Hartman, 1967
         1.1.1 Subfamily Ophelininae Hartmann-Schröder, 1971
         1.1.2 Genus Ammotrypanella McIntosh, 1878
         1.1.3 Subfamily Opheliinae (Malmgren, 1867) Hartmann-Schröder, 1971
         1.2 Genus Kesun Chamberlin, 1919 see Genus Travisia Johnston, 1840
         2 Subfamily Travisiinae Hartmann-Schröder, 1971