Mastadons and other megafauna left traces of dung in ancient lake beds.From The BBC:
Mammoth dung has proven to be a source of prehistoric information, helping scientists unravel the mystery of what caused the great mammals to die out.
An examination of a fungus that is found in the ancient dung and preserved in lake sediments has helped build a picture of what happened to the beasts.
The study sheds light on the ecological consequences of the extinction and the role that humans may have played in it.
Researchers describe this development in the journal Science.
The study was led by Dr Jacquelyn Gill from the University of Wisconsin, Madison, in the US.
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