fossil marine animal genera Linnaeus, 1758 - animals
   Phylum Arthropoda Siebold, 1848 - arthropods
     Crustacea Brünnich, 1772 see [unranked] Crustaceomorpha Chernyshev, 1960
       Class †incertae sedis
         1 Order †Waptiida Størmer, 1944, nom. corr. see Order Hymenocarina Clarke, 1882
         2 Order †Skaracarida K.J. Müller & D. Walossek, 1985 see Subclass Skaracarida (K.J. Müller & Walossek, 1985)
         3 Order †Orstenocarida Müller & Walossek, 1988
         4 Order †uncertain