| Family | Aphelidesmidae Brölemann, 1916
| 27 259 | Genera Species |
| Family | Chelodesmidae ♰ Cook, 1895
| 235 1106 | Genera Species |
| Family | Eurymerodesmidae Causey, 1951
| 3 53 | Genera Species |
| Family | Euryuridae Pocock, 1909
| 6 112 | Genera Species |
| Family | Holistophallidae Silvestri, 1909
| 7 12 | Genera Species |
| Family | Platyrhacidae ♰ Pocock, 1895
| 75 705 | Genera Species |
| Family | Rhachodesmidae Carl, 1903
| 27 121 | Genera Species |
| Family | Sphaeriodesmidae Humbert & DeSaussure, 1869
| 20 151 | Genera Species |
| Family | Tridontomidae Loomis & Hoffman, 1962
| 2 3 | Genera Species |
| Family | Xystodesmidae Cook, 1895 Xystodesmid Millipedes | 106 1266 | Genera Species |