[Kingdom] Animalia Linnaeus, 1758 - animals Grade Enterozoa Grade Cœlomata Phylum Appendiculata {Lankester} Branch Chætopoda Class Oligochæta Grube, 1850 - oligochaetes see [unranked] oligochaetous Clitellata Order Naidina 1 Genus Nais Müller, 1773 2 Genus Chœtogaster Blainville, 1828 see Genus Chaetogaster Baer, 1827