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what when
Fish teeth 5 October 2007
who where
Mark Purnell University of Leicester
explain

Studying the evolution of fish means learning more about their diet. But how do you do that?

University of Leicester scientist Dr Mark Purnell is studying tiny scratches on fossilized teeth.

Note: This film was first screened on BBC East Midlands Today as part of Brady's series "Sixty Seconds of Science" and isn't part of the Test Tube project.

- Click here for the series on the EMT website.

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