JOHN SIBBICK / SCIENCE PHOTO LIBRARY JOHN SIBBICK / SCIENCE PHOTO LIBRARY
Cretaceous landscape. Illustration of typical plants and trees in and around a river and swamp during the Cretaceous, a period of the Earth's history that lasted from around 145 million years ago to 66 million years ago. An erupting volcano is seen in the background. Plants that existed during the Cretaceous included conifers such as Araucaria, flowering plants (which had only recently evolved), ferns, mosses, horsetails, swamp cypresses, and some broadleaf trees.
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