Superphylum Panarthropoda Nielsen, 1995 see [unranked] Panarthropoda Nielsen, 1995 Phylum Onychophora Grube, 1853 - velvet worms Family †Luolishaniidae Hou & Bergström, 1995 Genus †Collinsium Yang et al., 2015 [monotypic] 1 †Collinsium ciliosum Yang et al., 2015