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
             ?Family †Toliapinidae Hooker, Russell & Phélizon, 1999
               1 Genus †Berruvius Russell, 1964
               2 Genus †Avenius Russell, Phélizon & Louis, 1992