[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Crustacea (Brünnich, 1772) - crustaceans see Superclass Crustacea Pennant, 1777
     Subclass Copepoda H. Milne-Edwards, 1840 - copepods
       Order Poecilostomatoida Thorell, 1859
         01 Family Anomoclausiidae Gotto, 1964
         02 Family Antheacheridae M. Sars, 1870
         03 Family Anthessiidae Humes, 1986
         04 Family Bomolochidae Sumpf, 1871
         05 Family Catiniidae Bocquet & Stock, 1957
         06 Family Chondracanthidae H. Milne Edwards, 1840
         07 Family Clausidiidae Embleton, 1901
         08 Family Clausiidae Giesbrecht, 1895
         09 Family Corycaeidae Dana, 1852
         10 Family Entobiidae Ho, 1984
         11 Family Ergasilidae von Nordmann, 1832
         12 Family Eunicicolidae G.O. Sars, 1918
         13 Family Gastrodelphyidae List, 1889
         14 Family Herpyllobiidae Hansen, 1892
         15 Family Intramolgidae Marchenkov & Boxshall, 1995
         16 Family Lamippidae Joliet, 1882
         17 Family Lichomolgidae Kossmann, 1877
         18 Family Lubbockiidae Huys & Böttger-Schnack, 1997
         19 Family Macrochironidae Humes & Boxshall, 1996
         20 Family Mesoglicolidae de Zulueta, 1911
         21 Family Myicolidae Yamaguti, 1936
         22 Family Mytilicolidae Bocquet & Stock, 1957
         23 Family Nereicolidae Claus, 1875
         24 Family Nucellicolidae Lamb et al., 1996 see Family Chitonophilidae Avdeev & Sirenko, 1991
         25 Family Octopicolidae Humes & Boxshall, 1996
         26 Family Oncaeidae Giesbrecht, 1892[1893]
         27 Family Pharodidae Illg, 1948 see Family Chondracanthidae H. Milne Edwards, 1840
         28 Family Philichthyidae Vogt, 1877
         29 Family Phyllodicolidae Delamare-Deboutteville & Laubier, 1961
         30 Family Pseudanthessiidae Humes & Stock, 1972
         31 Family Rhynchomolgidae Humes & Stock, 1972
         32 Family Sabelliphilidae Gurney, 1927
         33 Family Saccopsidae Lützen, 1964
         34 Family Sapphirinidae Thorell, 1860
         35 Family Serpulidicolidae Stock, 1979
         36 Family Spiophanicolidae J.-S. Ho, 1984
         37 Family Splanchnotropidae nom. null. see Family Splanchnotrophidae Norman & T. Scott, 1906
         38 Family Synapticolidae Humes & Boxshall, 1996
         39 Family Synaptiphilidae Bocquet, 1953
         40 Family Taeniacanthidae C.B. Wilson, 1911
         41 Genus Akessonia Bresciani & Lützen, 1962
         42 Genus Axinophilus Bresciani & Ockelmann, 1966
         43 Genus Conchocheres G.O. Sars, 1918
         44 Genus Gonophysema Bresciani & Lützen, 1960
         45 Genus Jeanella Scott, 1904, nom. dub.
         46 Genus Ophelicola Laubier, 1978
         47 Genus Pachos Stebbing, 1910
         48 Genus Tarificola Lopez-Gonzalez et al., 1998
         49 Genus Teredoika Stock, 1959
         50 Family Ventriculinidae Leigh-Sharpe, 1934
         51 Family Xenocoelomidae nom. null. see Family Xenocoelomatidae Bresciani & Lützen, 1966