After Parker, 1982 with some families from Martin & Davis, 2001

<==o Tanaidacea Dana, 1849
   |?- Pseudozeuxidae Sieg, 1982 [from Martin & Davis, 2001]
   |?- Typhlotanaidae Sieg, 1986 [from Martin & Davis, 2001]
   |--o Monokonophora [Apseudomorpha Sieg, 1980]
   |  |?- Anuropodidae Bacescu, 1980 [from Martin & Davis, 2001]
   |  |-- Apseudellidae Gutu, 1972
   |  |-- Apseudidae Leach, 1814 [Apseudinae]
   |  |-- Cirratodactylidae [not recognized by Martin & Davis, 2001]
   |  |?- Gigantapseudidae Kudinova-Pasternak, 1978
   |  |-- Metapseudidae Lang, 1970
   |  |-- Tanzanapseudidae Bacescu, 1975
   |  |-- Kalliapseudidae Lang, 1956
   |  |-- Leiopidae [not recognized by Martin & Davis, 2001]
   |  |-- Pagurapseudidae Lang, 1970
   |  |?- Parapseudidae Gutu, 1981
   |  |?- Sphyrapidae Gutu, 1980
   |  |?- Tanapseudidae Bacescu, 1978
   |  `?- Whiteleggiidae Gutu, 1972
   `--o Dikonophora
      |-- Agathotanaidae [not recognized by Martin & Davis, 2001]
      |-- Anarthruridae Lang, 1971
      |-- Leptognathiidae [not recognized by Martin & Davis, 2001]
      |-- Neotanaidae Lang, 1956
      |-- Nototanaidae Sieg, 1976
      |-- Paratanaidae Lang, 1949
      |-- Leptocheliidae Lang, 1973
      |-- Pseudotanaidae Sieg, 1976
      `-- Tanaidae Dana, 1849 [Crossurinae]

Reference(s):