Published in
American Association for the Advancement of Science, Science, 6103(338), p. 46-46, 2012
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They've Kept On Keeping On
Journal article published in 2012 by
Emma Sherratt 
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Abstract
Fortey introduces readers to well-worn organisms that, having endured all of the difficulties thrown at them over the ages, he refers to as "messengers from deep geological time."