Animalia Linnaeus, 1758 - animals Status: extant Annelida Lamarck, 1809 - segmented worms Status: extant 1 Polychaeta Grube, 1850 - polychaetes Status: extant 2 Myzostomida Status: extant 3 Oligochaeta Grube, 1850 - oligochaetes see [unranked] oligochaetous Clitellata Status: extant 4 Hirudinida Status: extant