Diplopoda
Allopocockiidae Keeton, 1960
Amblybolus Keeton, 1964
Atopetholidae Chamberlin, 1918
Banosolus Wang, 1951
Floridobolidae Keeton, 1959
Hoffmanobolidae
Messicobolidae Loomis, 1968
Pachybolidae Cook, 1897
Pseudospirobolellidae Brolemann, 1913
Rhinocricidae Brolemann, 1913
Rhinocrocidae
Spirobolellidae Brolemann, 1913
Spirobolidae Bollman, 1893
Tonkouibolus Demange & Mauries, 1975
Trigoniulidae Attems, 1909
Typhlobolellidae Hoffman, 1980