 Natura - nature
 Natura - nature
   actualia - actual entities
 actualia - actual entities
     Mundus Plinius - physical world
 Mundus Plinius - physical world
       naturalia - natural bodies
 naturalia - natural bodies
         Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
 Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
           Clade neomura Cavalier-Smith, 1987
 Clade neomura Cavalier-Smith, 1987
             Domain Eukaryota Chatton, 1925 - eukaryotes
 Domain Eukaryota Chatton, 1925 - eukaryotes
               Clade discaria Cavalier-Smith, 2021
 Clade discaria Cavalier-Smith, 2021
                 Clade dorsates Cavalier-Smith, 2021
 Clade dorsates Cavalier-Smith, 2021
                   Clade podiates Cavalier-Smith, 2012
 Clade podiates Cavalier-Smith, 2012
                     Clade Amorphea Adl et al. 2012 [Simpson, Medina & Adl 2020]
 Clade Amorphea Adl et al. 2012 [Simpson, Medina & Adl 2020]
                       Clade Obazoa Brown, Sharpe, Silberman, Heiss, Lang, Simpson & Roger 2013
 Clade Obazoa Brown, Sharpe, Silberman, Heiss, Lang, Simpson & Roger 2013
                         Clade Opisthokonta Cavalier-Smith 1987 [Simpson & Medina 2020] - animal-fungal clade
 Clade Opisthokonta Cavalier-Smith 1987 [Simpson & Medina 2020] - animal-fungal clade
                           Superkingdom Holozoa Lang, O'Kelly, Nerad, Gray & Burger, 2002
 Superkingdom Holozoa Lang, O'Kelly, Nerad, Gray & Burger, 2002
                             Clade filozoa Shalchian-Tabrizi, Minge, Espelund, Orr, Ruden, Jakobsen & Cavalier-Smith, 2008
 Clade filozoa Shalchian-Tabrizi, Minge, Espelund, Orr, Ruden, Jakobsen & Cavalier-Smith, 2008
                               Kingdom Animalia Linnaeus, 1758 - animals
 Kingdom Animalia Linnaeus, 1758 - animals
                                 Clade Planulozoa Wallberg, Thollesson, Farris & Jondelius 2004
 Clade Planulozoa Wallberg, Thollesson, Farris & Jondelius 2004
                                   Subkingdom Bilateria Hatschek, 1888 - bilaterians
 Subkingdom Bilateria Hatschek, 1888 - bilaterians
                                     Clade Nephrozoa Jondelius, Ruiz-Trillo, Baguñà & Riutort 2002
 Clade Nephrozoa Jondelius, Ruiz-Trillo, Baguñà & Riutort 2002
                                       Infrakingdom Protostomia Grobben, 1908
 Infrakingdom Protostomia Grobben, 1908
                                         Superphylum Spiralia Schleip, 1929
 Superphylum Spiralia Schleip, 1929
                                           Clade Platytrochozoa Struck, Wey-Fabrizius, Golombek, Hering, Weigert, Bleidorn, Klebow, Iakovenko, Hausdorf, Petersen, Kück, Herlyn & Hankeln 2014
 Clade Platytrochozoa Struck, Wey-Fabrizius, Golombek, Hering, Weigert, Bleidorn, Klebow, Iakovenko, Hausdorf, Petersen, Kück, Herlyn & Hankeln 2014
                                             Clade Lophotrochozoa Halanych, Bacheller, Aguinaldo, Liva, Hillis & Lake 1995 - lophotrochozoans
 Clade Lophotrochozoa Halanych, Bacheller, Aguinaldo, Liva, Hillis & Lake 1995 - lophotrochozoans
                                               Clade Trochozoa Beklemischev, 1944 - trochozoans
 Clade Trochozoa Beklemischev, 1944 - trochozoans
                                                 Phylum Annelida Lamarck, 1809 - segmented worms
 Phylum Annelida Lamarck, 1809 - segmented worms
                                                   [Clitellata auct.]
 see Class Clitellata Michaelsen, 1919
 [Clitellata auct.]
 see Class Clitellata Michaelsen, 1919
                                                     [Class Hirudinea Lamarck, 1818 - leeches]
 see Subclass Hirudinida
 [Class Hirudinea Lamarck, 1818 - leeches]
 see Subclass Hirudinida
                                                       Genus Abessebdella Richardson, 1975
 Genus Abessebdella Richardson, 1975
                                                       Genus Aetheobdella Moore, 1935
 Genus Aetheobdella Moore, 1935
                                                       Genus Amicibdella Richardson, 1974
 Genus Amicibdella Richardson, 1974
                                                       Genus Anphilaemon Richardson, 1979
 Genus Anphilaemon Richardson, 1979
                                                       Genus Bassianobdella Richardson, 1970
 Genus Bassianobdella Richardson, 1970
                                                       Genus Bdellamaris Richardson, 1953
 Genus Bdellamaris Richardson, 1953
                                                       [Order Bdellidea]
 [Order Bdellidea]
                                                       Genus Castrabdella Richardson, 1975
 Genus Castrabdella Richardson, 1975
                                                       Genus Cedbdella Richardson, 1975
 Genus Cedbdella Richardson, 1975
                                                       Genus Cryobdella Harding, 1922
 Genus Cryobdella Harding, 1922
                                                       Genus Cryobdellina Brinkmann, 1948
 Genus Cryobdellina Brinkmann, 1948
                                                       Genus Dineta Goddard, 1909
 Genus Dineta Goddard, 1909
                                                       Genus Domanibdella Richardson, 1974
 Genus Domanibdella Richardson, 1974
                                                       Genus Elocobdella Richardson, 1975
 Genus Elocobdella Richardson, 1975
                                                       Genus Eucryptobdella Richardson, 1975
 Genus Eucryptobdella Richardson, 1975
                                                       Genus Eunomobdella Richardson, 1969
 Genus Eunomobdella Richardson, 1969
                                                       Genus Euranophila Richardson, 1969
 Genus Euranophila Richardson, 1969
                                                       Genus Fijibdella Richardson, 1975
 Genus Fijibdella Richardson, 1975
                                                       Genus Galatheabdella Richardson & Meyer, 1973
 Genus Galatheabdella Richardson & Meyer, 1973
                                                       Genus Goddardobdella Richardson, 1969
 Genus Goddardobdella Richardson, 1969
                                                       Genus Habeobdella Richardson, 1971
 Genus Habeobdella Richardson, 1971
                                                       Genus Hirudinaria Whitman, 1886
 Genus Hirudinaria Whitman, 1886
                                                       Genus Hirudobdella Goddard, 1910
 Genus Hirudobdella Goddard, 1910
                                                       Genus Ichtyobdella Örsted, 1844
 Genus Ichtyobdella Örsted, 1844
                                                       Genus Illebdella Richardson, 1974
 Genus Illebdella Richardson, 1974
                                                       Genus Jaabdella Richardson, 1975
 Genus Jaabdella Richardson, 1975
                                                       Genus Kaiyabdella Richardson, 1972
 Genus Kaiyabdella Richardson, 1972
                                                       Genus Keibdella Richardson, 1975
 Genus Keibdella Richardson, 1975
                                                       Genus Leiobdella Richardson, 1974
 Genus Leiobdella Richardson, 1974
                                                       Genus Mahebdella Richardson, 1978
 Genus Mahebdella Richardson, 1978
                                                       Genus Makarabdella Richardson, 1959
 Genus Makarabdella Richardson, 1959
                                                       Genus Micobdella Richardson, 1974
 Genus Micobdella Richardson, 1974
                                                       Genus Mooreobdellina
 Genus Mooreobdellina
                                                       Genus Neoterrabdella Richardson, 1969
 Genus Neoterrabdella Richardson, 1969
                                                       Genus Notobdella Benham, 1909
 Genus Notobdella Benham, 1909
                                                       [Order Pericœla]
 [Order Pericœla]
                                                       Genus Philaemon
 Genus Philaemon
                                                       Genus Phytobdella Blanchard, 1894
 Genus Phytobdella Blanchard, 1894
                                                       Genus Placobdelloides Sawyer, 1986
 Genus Placobdelloides Sawyer, 1986
                                                       Genus Priscabdella Richardson, 1973
 Genus Priscabdella Richardson, 1973
                                                       Genus Pterobdella Kaburaki, 1921
 Genus Pterobdella Kaburaki, 1921
                                                       Genus Quaesitobdella Richardson, 1975
 Genus Quaesitobdella Richardson, 1975
                                                       Genus Quantenobdella Richardson, 1969
 Genus Quantenobdella Richardson, 1969
                                                       Genus Rennlbdella Richardson, 1975
 Genus Rennlbdella Richardson, 1975
                                                       Genus Richardsonianus Soos, 1968
 Genus Richardsonianus Soos, 1968
                                                       Genus Samoabdella Richardson, 1975
 Genus Samoabdella Richardson, 1975
                                                       Genus Semilagenta
 Genus Semilagenta
                                                       Genus Sibdella Richardson, 1975
 Genus Sibdella Richardson, 1975
                                                       Genus Trachelobdellina
 Genus Trachelobdellina
                                                       Genus Trulliobdella
 Genus Trulliobdella
                                                       Genus Xenobdella Richardson, 1975
 Genus Xenobdella Richardson, 1975
                                                       1 [Subclass Acanthobdellidea Livanow, 1905 [monotypic]]
 see Subclass Hirudinida
 1 [Subclass Acanthobdellidea Livanow, 1905 [monotypic]]
 see Subclass Hirudinida
                                                       2 [Subclass Euhirudinea Lukin, 1956 - true leeches]
 see Subclass Hirudinida
 2 [Subclass Euhirudinea Lukin, 1956 - true leeches]
 see Subclass Hirudinida