 Natura - nature | | Mundus Plinius - physical world | | Naturalia | | Biota | | Domain Eukaryota - eukaryotes | | Kingdom Animalia C. Linnaeus, 1758 - animals | | Subkingdom Bilateria (Hatschek, 1888) Cavalier-Smith, 1983 - bilaterians | | Branch Protostomia Grobben, 1908 - protostomes | | Infrakingdom
"Lophotrochozoa"
- lophotrochozoans | | Superphylum Eutrochozoa | | Phylum Annelida Lamarck, 1809 - segmented worms |  Class Polychaeta Grube, 1850 - polychaetes |  Genus †Arkonips Farrell & Briggs, 2007 | | Genus †Kadriorgaspis Hints, 2006 | | Genus †Xanioprion | | ?Family Potamodrilidae | | Order Aeolosomatida |  ?Genus Hrabeiella Pizl & Chalupsky, 1984 | | ?Family Parergodrilidae Reisinger, 1960 | | ?Order Psammodrilida | | Order Scolecida | | Family Aberrantidae Wolf, 1987 | | Order Nerillida | | Order Spintherida | | Order Phyllodocida | | Order Eunicida | | Order Amphinomida Lamarck, 1818 | | ?Family Polygordiidae Czerniavsky, 1881 | | Order Protodrilida | | Order Sabellida | | Order Terebellida | | Order Spionida |
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