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
Infraclass Eutheria Gill, 1872
Order †Pantolesta McKenna, 1975
1 Family †Pantolestidae Cope, 1884
2 Family †Pentacodontidae Simpson, 1937
see Subfamily Pentacodontinae Simpson, 1937
3 ?Family †Ptolemiidae Carroll, 1988, nom. null.
see Family Ptolemaiidae Osborn, 1908