Scanning electron micrograph (SEM) Fossilized hair. Woolly mammoths are extinct herbivorous mammals that lived in the tundras of Asia, Europe, and North America. Their thick coats and heavy layers of fat fitted them for life in cold, tundra-like conditions. They are closely related to modern-day Asiatic elephants. Woolly mammoths lived from the Pleistocene to the early Holocene epoch (from about 120,000 to 4,000 years ago). Magnification: x49 when shortest axis printed at 25 millimetres.
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