[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Phylum Annelida Lamarck, 1809 - segmented worms
     Class Polychaeta Grube, 1850 - polychaetes
       Family Pilargidae de Saint-Joseph, 1895
         1 Genus Ancistargis Jones, 1961
         2 Genus Ancistrosyllis McIntosh, 1878
         4 Genus Litocorsa T.H. Pearson, 1970
         5 Genus Otopsis Ditlevsen, 1917
         6 Genus Pilargis de Saint-Joseph, 1899
         7 Genus Sigambra Müller, 1858
         8 Genus Synelmis Chamberlin, 1919