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Informal group: Theria of Metatherian-Eutherian grade (mammal)
Classification by:

Vertebrata Cuvier, 1812 - vertebrates
   Gnathostomata
     Teleostomi
       Tetrapoda Goodrich, 1930
         Amniota Haeckel, 1866 - amniotes
           Class Mammalia Linnaeus, 1758 - mammals
             Subclass Theria Parker & Haswell, 1897
               Theria of Metatherian-Eutherian grade
                 1 Family †Aegialodontidae Kermack, 1967
                 2 Family †Deltatheridiidae Gregory & Simpson, 1926
                 3 Infraclass Metatheria Huxley, 1880 [monotypic]
                 4 Infraclass Eutheria Gill, 1872

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Last updated: 4 Aug 2022