JOHN SIBBICK / SCIENCE PHOTO LIBRARY JOHN SIBBICK / SCIENCE PHOTO LIBRARY
Jurassic landscape. Illustration of typical plants and trees in and around a river and swamp during the Jurassic, a period of the Earth's history that lasted from around 201 million years ago to 145 million years ago. The conditions were warm and humid, and plants that existed at this time included tree ferns, conifers, ferns, cycads, and horsetails. Flowering plants had not yet evolved.
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