Annelida Lamarck, 1809 - segmented worms Class Oligochaeta Grube, 1850 - oligochaetes see [unranked] oligochaetous Clitellata Order Tubificida Family Tubificidae Vejdovský, 1876 - sludge worms see Family Naididae Ehrenberg, 1828 Genus [Tubifex] Lamarck, 1816 1 Tubifex tubifex (Müller, 1774)