Order †Plesiadapiformes Simons & Tattersall, 1972 see Suborder Plesiadapiformes Simons & Tattersall, 1972 Superfamily †Microsyopoidea Osborn & Wortman, 1892 Family †Toliapinidae Hooker, Russell & Phélizon, 1999 Genus †Avenius Russell, Phélizon & Louis, 1992 †Avenius amatorumᵀ Russell, Phélizon & Louis, 1992