Phylum †Lobopodia Snodgrass, 1938 - lobopodians Class †Xenusia Dzik & Krumbiegel, 1989 - xenusians Order †Xenusiida Dzik & Krumbiegel, 1989 Family †Onychodictyidae Hou & Bergström, 1995 Genus †Onychodictyon Hou, Ramsköld & Bergström, 1991 †Onychodictyon gracilis Liu et al. 2008