Annelida Lamarck, 1809 - segmented worms
   Class Oligochaeta Grube, 1850 - oligochaetes see [unranked] oligochaetous Clitellata
     Order Tubificida
       Family Naididae Ehrenberg, 1828 - naidids
         1 Genus [Aulophorus] Schmarda, 1861 see Subgenus Aulophorus Schmarda, 1861
         2 Genus [Branchiodrilus] Michaelsen, 1900
         3 Genus Chaetogaster Baer, 1827
         4 Genus Dero Oken, 1807
         5 Genus [Nais] Müller, 1773
         6 Genus [Pristina] Ehrenberg, 1828
         7 Genus [Slavina] Vejdovský, 1883
         8 Genus [Stylaria] Lamarck, 1816