Malacostraca Latreille, 1802
Acadiocaris Brooks, 1962
Agathotanaidae Lang, 1971
Alavatanaidae Vonk & Schram, 2007
Anarthruridae Lang, 1971
Andrognathia Sieg, 1983
Androtanais Sieg, 1976
Anthracocarididae Schram, 1979
Apseudellidae Gutu, 1972
Apseudidae Leach, 1814
Armatognathia Kudinova-Pasternak, 1987
Armaturatanais Larsen, 2005
Bifidia Sieg & Zibrowius, 1988
Coalecerotanais Larsen, 2003
Colletteidae Larsen & Wilson, 2002
Cretitanaidae Schram, Sieg & Malzahn, 1986
Crurispina Larsen, 2003
Cryptocopidae (McLelland, 2008 MS) Bird & Larsen, 2009
Dimorphognathia Sieg, 1986
Gigantapseudidae Kudinova-Pasternak, 1978
Insociabilitanais Larsen, 2005
Jurapseudidae Schram, Sieg & Malzahn, 1986
Kalliapseudidae Lang, 1956
Leptocheliidae Lang, 1973
Leptognathiidae Sieg, 1976
Metapseudidae Lang, 1970
Mimicarhaphura Sieg, 1986
Mirandotanaidae Blazewicz-Paszkowycz & Bamber, 2009
Monstrotanais Kudinova-Pasternak, 1981
Neotanaidae Lang, 1956
Neotanaididae
Niveotanaidae Polz, 2005
Nototanaidae Sieg, 1976
Numbakullidae
Pagurapseudidae Lang, 1970
Pagurapseudopsididae Gutu, 2006a
Palaeotanais Reiff, 1936
Parafilitanais Kudinova-Pasternak, 1989
Paraleptognathia Kudinova-Pasternak, 1981
Parapseudidae Gutu, 1981
Paratanaidae Lang, 1949
Pseudoarthrura Larsen, 2005
Pseudomacrinella Kudinova-Pasternak, 1990
Pseudotanaidae Sieg, 1976
Pseudozeuxidae Sieg, 1982
Salemia Lang, 1971
Scoloura Sieg & Dojiri, 1991
Singula Blazewicz-Paszkowycz, 2005
Singularia Blazewicz-Paszkowycz, 2005
Sphaeromapseudidae Larsen, 2011
Sphyrapidae Gutu, 1980
Sphyrapodidae Gutu, 1980b
Spinitanaopsis Larsen, 2005
Tanaellidae Larsen & Wilson, 2002
Tanaidae Dana, 1849
Tanaissuidae Bird & Larsen, 2009
Tanzanapseudidae Bacescu, 1975
Teleotanaidae Bamber, 2008c
Typhlotanaidae Sieg, 1986
Whiteleggiidae Gutu, 1972
