Euarthropoda †Lamellipedia see Superclass Lamellipedia Hou & Bergström, 1997 †Artiopoda Hou & Bergström, 1997 see Subphylum Artiopoda Hou & Bergström, 1997 Order †Nektaspida Raymond, 1920 - nektaspids see Class Nektaspida Raymond, 1920 Family †Naraoiidae Walcott, 1912 1.1 Genus †Misszhouia Chen, Edgecombe & Ramsköld, 1997 1.n Genus †Naraoia Walcott, 1912