[Panarthropoda] Nielsen, 1995 - panarthropods
   Arthropoda Siebold, 1848 - arthropods see Phylum Arthropoda Siebold, 1848
     Mandibulata see Subphylum Mandibulata Snodgrass, 1938
       Pancrustacea Zrzavý et al., 1997 see Subphylum Pancrustacea Zrzavý et al., 1997
         Oligostraca
           1 Ostracoda Latreille, 1806 see Class Ostracoda Latreille, 1802
           2.1 Mystacocarida see Subclass Mystacocarida Pennak & Zinn, 1943
           2.2 Ichthyostraca Zrzavý et al., 1997