Euarthropoda †Lamellipedia see Superclass Lamellipedia Hou & Bergström, 1997 †Artiopoda Hou & Bergström, 1997 see Subphylum Artiopoda Hou & Bergström, 1997 †Aglaspidida see Subclass Aglaspidida (Walcott, 1911) Bergström, 1968 Genus †Aglaspis Hall, 1862 1 †Aglaspis spinifer Raasch, 1939