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Gr 9 Up—This paleobotanical gallery offers a plethora of insights into how plants developed over the past 2.6 billion years and how scientists "read" subtle clues in fossil records. Arranged roughly in chronological order, the big, bright color photos begin with a chunk of rock from the Paleoproterozoic era showing mineral banding indicative of photosynthesis and end with a close-up of a modern seed similar to 30,000-year-old specimens that were preserved well enough to grow. The book al...Log In or Sign Up to Read More