After Martin & Davis, 2001, with species collected from ITIS – the Integrated Taxonomic Information System

<==o Phyllocarida Packard, 1879
   `--o Leptostraca Claus, 1880 [Nebaliaceae, -aceae is ending for families in botanical taxonomy, why used here, I don't know. Possibly a writing mistake of -acea an ending often used in to mark superfamily in older literature of invertebrates]
      |-- Nebaliopsis typica G. O. Sars, 1887 [Nebaliopsidae Hessler, 1984]
      |--o Neballiidae Samouella, 1819
      |  |--o Nebalia Leach, 1814
      |  |  |-- N. bipes (O. Fabricius, 1780)
      |  |  |-- N. borealis Dahl, 1985
      |  |  |-- N. daytoni Vetter, 1996 (Dayton sea flea)
      |  |  |-- N. gerkenae Haney and Martin, 2000 (Gerken sea flea)
      |  |  |-- N. herbstii Leach, 1814
      |  |  |-- N. hessleri Martin, Vetter and Cash-Clark, 1996 (Hessler sea flea)
      |  |  |-- N. longicornis Thomson, 1879
      |  |  |-- N. pugettensis
      |  |  |-- N. schizophthalma Haney, Hessler and Martin, 2001 (spliteye sea flea)
      |  |  `-- N. strausi Risso, 1826
      |  |--o Nebaliella Thiele, 1904
      |  |  |-- N. caboti A. E. Clark, 1932
      |  |  `-- N. extrema
      |  `-- Sarsinebalia typhlops (Sars, 1870) Dahl, 1985 
      `--o Paranebaliidae Walker-Smith & Poore, 2001
         |-- Paranebalia longipes (Willemoes-Suhm, 1875) Claus, 1880
         `?- Levinebalia Walker-Smith, 2000

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