Kingdom [Animalia] Linnaeus, 1758 - animals Subkingdom Protozoa Goldfuss, 1818 see Kingdom Protozoa Goldfuss, 1818 Class Ciliata see [unranked] ciliates Order Spirotricha Suborder Hypotricha Stein, 1859 1 Genus [Stylonychia] Ehrenberg, 1830