Southern Shield Fern (Thelypteris Kunthii) growing among Horsetails (Equisetum Telmateia) at Pacific Rim National Park,British Columbia. Horsetails are a living fossil and the only remaining genus of the entire class of Equisetopsida which for over one hundred million years dominated the understory of late Paleozoic forests

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Photo credit: © Peter Van Rhijn / Alamy / Afripics
License: Licensed
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