Loughborough University Library (Credit: Vijetha Vijayan, distributed via Flickr)

Media Library Another Foulden fossil leaf magnified 400x.

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Another Foulden fossil leaf magnified 400x.

Another Foulden fossil leaf magnified 400x. (Credit: Tammo Reichgelt/University of Connecticut)

The oval shapes visible in the image are the openings through which the leaf once released water and absorbed carbon dioxide.

Credit: Tammo Reichgelt/University of Connecticut

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