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
Extinct animals from the Isle of Man Extinct animals from the Isle of Man Manx cattle became extinct c. 1815. A description of the breed survives along with a record that the Manx people referred to them as "Boaghans" or "Boghans" (Manx words for cow include "Booa" and "Baa"). Thomas Quayle described the Manx breed, just as they were dying out, in his 1812 "General View of Agriculture in the Isle of Man": The Manx sheepdog was a breed of sheepdog from the Isle of Man that is now extinct. Little is known about the breed except that it had a remarkable "ability to 'hould' or separate