fossil marine animal genera Linnaeus, 1758 - animals
   Phylum †Problematica Andrews, 1970
     Class †Machaeridia Withers, 1926
       1 Order †Turrilepadida Pilsbry, 1916
       2 Order †Lepidocoleomorpha Schallreuter, 1985
       3 Order †Hercolepadida Dzik, 1986 see Order Multiplacophora Hoare & Mapes, 1995