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U.S. Geological Survey: Pleistocene porcupine (Erethizontidae) records in arid southwestern North America and comparisons with the modern distribution of Erethizon dorsatum in southern California and Arizona
December 29, 2025
WASHINGTON, Dec. 29 -- The U.S. Department of the Interior Geological Survey issued the following abstract of an article:

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Pleistocene porcupine (Erethizontidae) records in arid southwestern North America and comparisons with the modern distribution of Erethizon dorsatum in southern California and Arizona

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The North American porcupine ( Erethizon dorsatum ) is widely distributed throughout many ecosystems on the continent from northern Me . . .

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