metazoans Haeckel 1874 - multicellular animals see Kingdom Animalia Linnaeus, 1758
   [stem] Phylum †Procoelomata Bergström, 1989
     Class †Machaeridia Withers, 1926
       1 Order †Turrilepadida Pilsbry, 1916
       2 Order †Sachitida He, 1980
       3 Order †Tommotiida Missarzhevsky, 1970 see Class Tommotiida Missarzhevsky, 1970
       4 Order †Hercolepadida Dzik, 1986 [monotypic] see Order Multiplacophora Hoare & Mapes, 1995