Audio File   AGE OF THE ELEPHANT AND THE HORSE Land elevation and sea segregation were slowly changing the world’s weather, gradually cooling it, but the climate was still mild. Sequoias and magnolias grew in [More]
Audio File THE AGE OF EARLY MAMMALS   50,000,000 years ago, the land areas of the world were very generally above water or only slightly submerged. The formations and deposits of this period are both land [More]
Audio File   The era of mammals extends from the times of the origin of placental mammals to the end of the ice age, covering a little less than fifty million years. During this Cenozoic [More]
Audio File   THE AGE OF BIRDS   The great Cretaceous period derives its name from the predominance of the prolific chalk-making foraminifers in the seas. The period brings Urantia to near the end of the [More]