Annelida Lamarck, 1809 - segmented worms
   "polychaetes" see Class Polychaeta Grube, 1850
     1 Scolecida G.W. Rouse & K. Fauchald, 1997 see Order Scolecida Rouse & Fauchald, 1997
     2 Palpata G.W. Rouse & K. Fauchald, 1997
     3.1 Family Aeolosomatidae Beddard, 1895
     3.2 Family Potamodrilidae
     4.1 Family Parergodrilidae Reisinger, 1960
     4.1.0 [Family "Parerogodrilidae" nom. null.] see Family Parergodrilidae Reisinger, 1960
     4.2 Genus Hrabeiella Pĭzl & Chalupský, 1984
     5 Family Psammodrilidae Swedmark, 1953