| Suborder | Anthracocaridomorpha
Sieg, 1980
| 2
7
9 | Families
Genera
Species |
| Suborder | Apseudomorpha
Sieg, 1980
| 18
158
897 | Families
Genera
Species |
| Suborder | Neotanaidomorpha
Sieg, 1980
| 1
0
0 | Family
Genera
Species |
| Suborder | Tanaidomorpha
Sieg, 1980
| 32
256
1615 | Families
Genera
Species |
| Family | Anuropodidae
Bacescu, 1980
| 0
0 | Genera
Species |
| Family | Cryptocaridae ♰
Sieg, 1980
| 1
1 | Genus
Species |
| Family | Eucryptocaridae ♰
Heard & Morales-Núñez, 2020
| 0
0 | Genera
Species |
| Family | Nototanaididae
| 0
0 | Genera
Species |
| Family | Ophthalmapseudidae
Heard & Morales-Núñez, 2020
| 1
1 | Genus
Species |
| Family | Protoapseudoidae
Heard, Morales-Núñez, De Lourdes Serrano-Sánchez, Coutiño, Barragán & Vega, 2020
| 1
1 | Genus
Species |
| Genus | Alavatanais ♰
Vonk & Schram, 2007
| 2 | Species |
| Genus | Arcantitanais
Sánchez-García, Peñalver & Perrichot, 2016
| 0 | Species |
| Genus | Armadillopsis
Sánchez-García, Peñalver & Perrichot, 2016
| 0 | Species |
| Genus | Armaturatanais
Larsen, 2005
| 4 | Species |
| Genus | Bifidia
| 1 | Species |
| Genus | Coalecerotanais
| 2 | Species |
| Genus | Cristatotanais
| 3 | Species |
| Genus | Gajavis
| 1 | Species |
| Genus | Gammerus ⇒ ´gammarus´
| 1 | Species |
| Genus | Insociabilitanais
Larsen, 2005
| 1 | Species |
| Genus | Leptoganthiopsis ⇒ Leptognathiopsis
| 1 | Species |
| Genus | Leptognathioides
Bird & Holdich, 1984
| 7 | Species |
| Genus | Mekon
Bamber & Boxshall, 2006
| 1 | Species |
| Genus | Muramura
Gutu, 2006 ⇒ Muramurina
| 5 | Species |
| Genus | Nematotonais
| 1 | Species |
| Genus | Palaeotanais ♰
Reiff, 1936
| 2 | Species |
| Genus | Paraspseudotanais
| 1 | Species |
| Genus | Proleptochelia
| 2 | Species |
| Genus | Pseudomacrinella
Kudinova-Pasternak, 1990
| 2 | Species |
| Genus | Safaritanais
Kudinova-Pasternak, 1987
| 1 | Species |
| Genus | Singula
Blazewicz-Paszkowycz, 2005
| 1 | Species |
| Genus | Spinitanaopsis
| 1 | Species |
| Genus | Tanabnormia
| 1 | Species |
| Genus | Tanaidaurum
Pazinato, Müller & Haug, 2023
| 1 | Species |
| Genus | Tytthotanais
Sánchez-García, Peñalver & Perrichot, 2016
| 0 | Species |
