Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Eutheria are a group of mammals consisting of placental mammals plus all extinct mammals that are more closely related to living placentals (such as humans) than to living marsupials (such as kangaroos). They are distinguished from non-eutherians by various features of the feet, ankles, jaws and teeth. One of the major differences between placental and non- placental eutherians is that placentals lack epipubic bones, which are present in all other fossil and living mammals.

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