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Carboniferous Ferns

Photo: Scientist studying Carboniferous ferns
Botanist Robin C. Moran studies Carboniferous ferns at the Missouri Botanical Garden in St. Louis, Missouri. Ferns made up a significant component of the terrestrial vegetation during the Carboniferous period. Fossilization of giant tree ferns is one of the sources for the huge coal deposits formed during the period.
Photograph by James P. Blair

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