Order †Plesiadapiformes Simons & Tattersall, 1972 see Suborder Plesiadapiformes Simons & Tattersall, 1972 Superfamily †Microsyopoidea Osborn & Wortman, 1892 Family †Toliapinidae Hooker, Russell & Phélizon, 1999 Genus †Sarnacius Hooker, Russell & Phélizon, 1999 †Sarnacius gingerichiᵀ (Russell, 1981)