Mammoth construction of the Great Pyramid of ancient Egypt. The earliest known proboscideans, the clade that contains the elephants, existed about 55 million years ago around the Tethys Sea area. The closest relatives of the Proboscidea are the sirenians and the hyraxes. The family Elephantidae is known to have existed six million years ago in Africa, and includes the living elephants and the mammoths. Among many now extinct clades, the mastodon is only a distant relative of the mammoths, and part of the separate Mammutidae family, which diverged 25 million years before the mammoths evolved. The following cladogram shows the placement
October the First Is Too Late They later realize that the glass surface they found was the world long after all life was extinct. Dick, without John, joins an expedition by sea to Ancient Greece. They get to know a Greek family and, having brought a piano, Dick plays to them. Composing music in a temple, he meets a priestess who suggests a musical competition. He agrees; the priestess's music has a strange quality. After the decision that it is a draw, Dick and the priestess spend the night together. He later wakes alone in a futuristic room; John is there and explains that they are