†class Xenusia Dzik and Krumbiegel 1989
Parent taxon: Panarthropoda according to M. R. Smith and J. Ortega-Hernández 2014
See also Kouchinsky et al. 2011 and Skovsted 2006
Sister taxa: Arthropoda, Aysheaiidae, Dinocaridida, Lobopodia, Luolishaniida, Onychodictyon, Opabiniidae, Tardigrada
Subtaxa: Archonychophora Scleronychophora Xenusia auerswaldae Xenusiida