[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 Capitellidae Grube, 1862
         Genus Notomastus Sars, 1851
           1 Notomastus aberans Day, 1957
           2 Notomastus agassizii McIntosh, 1885
           3 Notomastus exsertilis de Saint Joseph, 1906
           4 Notomastus formianus Eisig, 1887
           5 Notomastus latericeus Sars, 1851
           6 Notomastus lineatus Claparède, 1870
           7 Notomastus profundus Eisig, 1887
           8 Notomastus rubicundus (Keferstein, 1862)