Phylum Schizoramia Bergström, 1976a see Phylum Arthropoda Siebold, 1848 Superclass †Lamellipedia Hou & Bergström, 1997 - lamellipedians Class †Artiopoda Hou & Bergström, 1997 see Subphylum Artiopoda Hou & Bergström, 1997 Subclass †Conciliterga Hou & Bergström, 1997 Order †Helmetiida Novozhilov, 1969 Family †Skioldiidae H. Xianguang & J. Bergström, 1997 see Family Helmetiidae Simonetta & Delle Cave, 1975