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 †Nectopleura Hou & Bergström, 1997 Order †Halicyna Gall & Grauvogel, 1967 see Subclass Halicyna Gall & Grauvogel, 1967