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Eutheria (including placental mammals)
Temporal range: Lower Cretaceous – Recent
House mouse.jpg
House Mouse, Mus musculus
Scientific classification e
Kingdom:Animalia
Phylum:Chordata
Subclass:Theria
Clade:Eutheria
Huxley, 1880
Orders

Eutheria is the taxonomical name for the main group of living mammals.

This taxon contains the placental mammals, of which humans are one species.

Eutheria was introduced by Thomas Henry Huxley in 1880. Members of Eutheria are now found on all continents and in all oceans.

The terms 'Eutheria and 'Placental' do not mean quite the same thing. A few early eutherians in the Lower Cretaceous were not placentals. Eomaia is the earliest example.

All living Eutherians are placental mammals. This means that a Eutherian fetus is fed during gestation by a placenta. The offspring of Eutherians are carried in the mother's uterus until fully developed.

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