Phylum Onychophora Grube 1853 (velvet worm)
Parent taxon: Panarthropoda according to J. Yang et al. 2015
See also Edgecombe et al. 2011, Nielsen 2012 and Zrzavy et al. 1998
Sister taxa: Arthropoda, Lobopodia, Luolishaniida, Onychodictyon, Opabiniidae, Tardigrada, Xenusia
Subtaxa: Antennacanthopodia Cardiodictyon Diania Euonychophora Hallucishaniids Helenodora Microdictyon Paucipodia Udeonychophora Xenusion