Class Mammalia Linnaeus, 1758 - mammals
Subclass Boreosphenida Luo, Cifelli & Kielan-Jaworowska, 2001 - tribotherians
see Clade Boreosphenida Luo, Cifelli & Kielan-Jaworowska 2001
Infraclass Eutheria Gill, 1872
Cohort Placentalia Owen, 1837 - placentals
Order Primates Linnaeus, 1758 - primates
Suborder †Plesiadapiformes Simons & Tattersall, 1972
Superfamily †Paromomyoidea Simpson, 1940
Family †Palaechthonidae Szalay, 1969