| 1. | It was formed about 11 thousand years ago after the Pleistocene ice ages.
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| 2. | It was reduced to its current range before and during the Pleistocene ice ages.
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| 3. | Bigtooth maples and other unique plants are survivors left over from the Pleistocene Ice Age.
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| 4. | In Northern Europe it was the youngest of the glacials of the Pleistocene ice age.
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| 5. | It includes parts of Pleistocene ice ages.
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| 6. | Subsequent excavations by the Indiana State Museum have determined the bones to originate from Pleistocene Ice Age animals.
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| 7. | The entire region was covered by ice sheets during the Pleistocene ice ages, save perhaps for a few nunataks.
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| 8. | In common with the rest of Scotland, Yell was covered in thick ice sheets during the Pleistocene ice ages.
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| 9. | This desert butte was once an island in a lake that filled Death Valley several times during the Pleistocene ice ages.
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| 10. | A large portion of the plateau is a coalfield that was formed approximately 320 million years ago during the Pleistocene ice age.
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