| Los Angeles Times Unusual rib bones that grow out of the neck are giving scientists new clues about what caused the woolly mammoth to become extinct roughly 10,000 years ago. The so-called cervical ribs – extra rib bones that protrude from the vertebrae at the base of the … Abnormality In Woolly Mammoth Remains Give Clue To Their ExtinctioniScienceTimes.com Inbreeding and Bad Weather Caused Woolly Mammoth ExtinctionInternational Business Times UK Last Woolly Mammoths May Have Suffered Birth DefectsLiveScience.com Science Now all 13 news articles |
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