Ferns 1 (IMAGE)

University of Southampton

Ferns 1

Caption

Ferns were some of the first land plants to colonise the continents, with some analysis indicating that they evolved about 430 million years ago. The scientists report a step change in the composition of the continental crust at precisely this time, which they relate to fundamental changes in river systems tied to the evolution of land plants. Photograph: Dr Tom Gernon / University of Southampton [@TMGernon].

Credit

Photograph: Dr Tom Gernon / University of Southampton [@TMGernon].

Usage Restrictions

Photograph: Dr Tom Gernon / University of Southampton [@TMGernon].

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