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
       Magnorder Epitheria McKenna, 1975 see Cohort Placentalia Owen, 1837
         Superorder Insectivora Bowdich, 1821
           Order Lipotyphla Haeckel, 1866 see Order Eulipotyphla Waddell, Okada & Hasegawa, 1999
             Suborder Soricomorpha Gregory, 1910
               Family †"Nyctitheriidae" Simpson, 1928 [paraphyletic]
                 Genus †Paranyctoides Fox, 1979
                   1 †Paranyctoides sternbergiᵀ Fox, 1979
                   2 †Paranyctoides aralensis Nessov, 1993 see Paranyctoides quadrans (Nessov, 1982)
                   3 †Paranyctoides maleficus Fox, 1984
                   4 †Paranyctoides megakeros Lillegraven & McKenna, 1986 see Alostera saskatchewanensis Fox, 1989