Mammalia Linnaeus 1758 [Rowe 1988], nom. cl. inval. see Class Mammalia Linnaeus, 1758
   Metatheria Huxley 1880 [O'Leary, Allard, Novacek, Meng & Gatesy 2004] see Infraclass Metatheria Huxley, 1880
     Marsupialiformes Vullo, Gheerbrant, de Muizon & Néraudeau, 2009
       Notometatheria Kirsch, Lapointe & Springer 1997
         Marsupialia Jameson 1818 [O'Leary, Allard, Novacek, Meng & Gatesy 2004] see Cohort Marsupialia Jameson, 1818
           [Order] Didelphimorphia Gill, 1872
             Family †Glasbiidae Clemens, 1966
               1 Genus †Palangania Goin, Candela, Bond, Pascual & Escribano, 1998
               2.1 Genus †Glasbius Clemens, 1966
               2.2 Genus †Periakros Goin, Abello & Chornogubsky, 2010