Mammoths lived during the Ice Ages of the Pleistocene epoch. The oldest recovered mammothfossils, found in Africa, are four million years old. Mammoths migrated from Africa, and several species of varying sizes and appearances evolved on other continents. Some mammoths crossed the Bering land bridge. Most mammoths favored tundra habitats formed when Ice Age glaciers covered parts of the northern hemisphere.
Most mammoths were large mammals, standing 3.5 to 4.3 meters (12 to 14 feet) tall when measured from the ground to the top of their shoulders. They weighed an average of seven metric tons (eight tons). Other mammoths were dwarves that only stood 1.8 meters (6 feet) tall. These small mammoths lived on islands, including Siberia's Wrangel Island and California's Channel Islands. Woolly mammoths grew long, thick brown fur over a short undercoat, which protected them in cold climates. Fat layers, which were 7.5 centimeters (3 inches) thick, underneath their skin and in their shoulder hump and prominent brow, insulated their bodies. Each mammoth had two ivory tusks, which extended fromtheir upper jaw. Mammoths' tusks were as long as five meters (sixteen feet) and curved toward and crossed over their trunk. During their lifespan, they had a total of twenty-four molars, which they shed. Because of their cold habitat, mammoths' ears were small, to retain heat.
Thanks for description - Animal life club