Phylum Euarthropoda Lankester, 1904 see [unranked] Euarthropoda Subphylum †Artiopoda Hou & Bergström, 1997 1 Genus †Yawunik Aria, Caron & Gaines, 2015 2 Superclass †Vicissicaudata Ortega-Hernández, Legg & Braddy, 2013 3 Superclass †Trilobitomorpha Størmer, 1944