Kingdom Animalia Linnaeus, 1758 - animals Phylum Arthropoda Siebold, 1848 - arthropods Subphylum Chelicerata Heymons, 1901 Class Arachnida Lamarck, 1801 Order Ricinulei Thorell, 1876 - ricinuleids Suborder Neoricinulei Selden, 1992 [monotypic] 1 Superfamily Ricinoidoidea Ewing, 1929 [monotypic]