 "s phylogenetic tree, the basal Opiliones split into the "Phalangida" and stem Cyphophthalmi.The Cyphophthalmi stem then diversified into Cyphophthalmi proper and Tetrophthalmi, while the Phalangida split into Laniatores and the "Palpatores".Finally, the Palpatores diversified into Eupnoi and Dyspnoi.