Chelicerata Heymons, 1901 Ricinulei Thorell, 1876 [monotypic] - ricinuleids Suborder †Primoricinulei Wunderlich, 2015 1 Family †Primoricinuleidae Wunderlich, 2015 [monotypic] 2 Family †Hirsutisomidae Wunderlich, 2017 [monotypic] 3 Family †Monooculrcinulidae Dunlop, Penney & Jekel 2017, orth. inval. [monotypic] see Family Monooculricinuleidae Wunderlich, 2017