Early Cretaceous – Recent | image=Eomaia scansoria.JPG | image_width = 270px | image_caption = Fossil of Eomaia, the oldest known eutherian | regnum = Animalia | phylum = Chordata | classis = Mammalia | subclassis = Theria | infraclassis = Eutheria | infraclassis_authority = Thomas Henry Huxley, 1880 | subdivision_ranks = Orders | subdivision = Bobolestes Eomaia Montanalestes Murtoilestes Prokennalestes Superorder Xenarthra Superorder Afrotheria Superorder Euarchontoglires Superord… (More on Eutheria)