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Old August 11th, 2016 #72
alex revision
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Tooth in poo suggests ancient shark ate its Young


Scientists have discovered a baby tooth in the fossilised faeces of a prehistoric shark, and concluded that the animals ate their own young.

This rare evidence of "filial cannibalism" was only revealed because the shark's corkscrew-shaped rectum produced dung in a distinctive spiral.

One such dropping, collected in Canada, holds a tiny tooth of the same species.

http://www.bbc.com/news/science-environment-37032656