SALLY BENSUSEN (1981) / SCIENCE PHOTO LIBRARY SALLY BENSUSEN (1981) / SCIENCE PHOTO LIBRARY
Illustrated reconstruction of a fossilised angiosperm or flowering plant from Sweden's upper Cretaceous period. The flower is around 80 million years old and is thought to be a cousin of the rose. Fossil pollen evidence indicates that the angiosperms appeared at the beginning of the Cretaceous, approximately 136 million years ago. By the second half of the Cretaceous they had replaced the gymnosperms (the conifers, cycads, ginkos & seed ferns) as the dominant vegetation.
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