Fossil of acalamites from the Cambrian of Czech Republic

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Photo credit: © Jana Scigelova / Alamy / Afripics
License: Royalty Free
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Keywords: ancient, calamites, cambrian, czech, evolution, extinct, fossil, fossiled, horsetails, mineral, natural, nature, ocean, ordovician, paleontology, period, plant, prehistoric, prehistory, republic, rock, science, stone