| Suborder | Amphascandria
With, 1915
| 12
175
1868 | Families
Genera
Species |
| Suborder | Heterarthrandria
Sars, 1902
| 19
286
3201 | Families
Genera
Species |
| Suborder | Isokerandria
Sars, 1902
| 5
29
151 | Families
Genera
Species |
| Family | Arctokonstantinidae
Markhaseva & Kosobokova, 2001
| 2
3 | Genera
Species |
| Family | Boholinidae
Fosshagen & Iliffe, 1989
| 1
8 | Genus
Species |
| Family | Clausocalanidae
Giesbrecht, 1893
| 11
70 | Genera
Species |
| Family | Fosshageniidae
Suárez-Moráles & Iliffe, 1996
| 2
5 | Genera
Species |
| Family | Hyperbionychidae
Ohtsuka, Roe & Boxshall, 1993 ⇒ Hyperbionycidae
| 2
3 | Genera
Species |
| Family | Hyperbionycidae
| 0
0 | Genera
Species |
| Family | Kyphocalanidae
Markhaseva & Schulz, 2009
| 1
1 | Genus
Species |
| Family | Mecynoceridae
Andronov, 1973 ⇒ Paracalanidae
| 1
7 | Genus
Species |
| Family | Metridiidae
G.O. Sars, 1902
| 0
0 | Genera
Species |
| Family | Metridinidae
G. O. Sars, 1902
| 5
95 | Genera
Species |
| Family | Nullosetigeridae
Soh, Ohtsuka, Imabayashi & Suh, 1999
| 1
10 | Genus
Species |
| Family | Parkiidae
Ferrari & Markhaseva, 1996
| 0
0 | Genera
Species |
| Family | Phyllopodidae
Brodsky, 1950 ⇒ Nullosetigeridae
| 0
0 | Genera
Species |
| Family | Rhincalanidae
Geletin, 1976
| 2
14 | Genera
Species |
| Family | Rostrocalanidae
Markhaseva, Schulz & Martínez Arbizu, 2009
| 1
2 | Genus
Species |
| Family | Ryocalanidae
Andronov, 1974
| 2
14 | Genera
Species |
| Family | Scolecitricidae
Sars, 1900 ⇒ Scolecitrichidae
| 0
0 | Genera
Species |
| Family | Subeucalanidae
Giesbrecht, 1893 ⇒ Eucalanidae
| 0
0 | Genera
Species |
| Family | Sulcanidae
Nicholls, 1945
| 1
1 | Genus
Species |
| Genus | Antirhabdus
Park, 2000
| 0 | Species |
| Genus | Eikocalanus
Boeck, 1867
| 0 | Species |
| Genus | Laymereria
| 0 | Species |
| Genus | Mariaediaptomus
Stepanova in Borutzky, Stepanova & Kos, 1991
| 0 | Species |
| Genus | Nanodiaptomus
Dang & Ho in Ho, Dang, Nguyen, Phan, Le, Nguyen & Duong, 2003
| 0 | Species |
