fossil marine animal genera Linnaeus, 1758 - animals
   Arthropoda Siebold, 1848 - arthropods
     01 Merostomata Dana, 1852 - horseshoe crabs see Class Xiphosura Latreille, 1802
     02 Arachnida Lamarck, 1801
     03 Pycnogonida Latreille, 1810 - pycnogonids
     04 †"Paratrilobita"
     05 †Merostomoidea Stormer, 1944
     06 †Marrelomorpha Beurlen, 1934 see Class Marrellomorpha Beurlen, 1934
     07 Myriapoda Latreille, 1802 see Subphylum Myriapoda Latreille, 1802
     08 †uncertain
     09 †Trilobita Walch, 1771 - trilobites
     10 †Thylacocephala Pinna et al., 1982
     11 Crustacea Brünnich, 1772 see [unranked] Crustaceomorpha Chernyshev, 1960