Order †Plesiadapiformes Simons & Tattersall, 1972 see Suborder Plesiadapiformes Simons & Tattersall, 1972
   1 Genus †Purgatorius Van Valen & Sloan, 1965
   2.1 Genus †Pandemonium van Valen, 1994
   2.2.1 Genus †Palenochtha Simpson, 1937
   2.2.2 Family †Micromomyidae Szalay, 1974
   2.2.3.1 Family †Plesiadapidae Trouessart, 1897
   2.2.3.2.1 Family †Paromomyidae Simpson, 1940
   2.2.3.2.2 Order Primates Linnaeus, 1758 - primates
   2.2.4 Superfamily †Microsyopoidea Osborn & Wortman, 1892