| Suborder | Epiocheirata Harvey, 1992
| 4 83 1470 | Families Genera Species |
| Suborder | Iocheirata Harvey, 1992
| 24 522 4870 | Families Genera Species |
| Family | Chelonethidae
| 0 0 | Genera Species |
| Family | Chieridiidae
| 0 0 | Genera Species |
| Family | Chthonidae Daday, 1888
| 0 0 | Genera Species |
| Family | Dithidae Chamberlin, 1929 ⇒ Tridenchthoniidae
| 0 0 | Genera Species |
| Family | Dracochelidae ♰ Schawaller, Shear & Bonamo, 1991
| 1 1 | Genus Species |
| Family | Lechytidae
| 0 0 | Genera Species |
| Family | Miratemnidae Dumitresco & Orghidan, 1970
| 0 0 | Genera Species |
| Family | Myrmochernetidae Chamberlin, 1931
| 0 0 | Genera Species |
| Family | Obisiidae Sundevall, 1833 ⇒ Cheliferidae
| 0 0 | Genera Species |
| Family | Olipiidae Banks, 1895 ⇒ Olpiidae
| 0 0 | Genera Species |
| Family | Synsphyronidae Beier, 1932
| 0 0 | Genera Species |
| Genus | Antilopium Beier, 1962
| 0 | Species |
| Genus | Austrocheridium Castri, 1962
| 0 | Species |
| Genus | Kewochthonius J. C. Chamberlin, 1929 ⇒ Chthonius
| 4 | Species |
| Genus | Megathis Stecker, 1875
| 2 | Species |
| Genus | Nipponorgarypus Morikawa, 1955
| 1 | Species |
| Genus | Orideobisium Kishida, 1966
| 0 | Species |