Life in Stone, Fossils of the Colorado Plateau by Christa Sadler - Part 5

Like pages in a book, the layers of sedimentary rock that are exposed on the Colorado Plateau tell us much about the diversity of environments that have come and gone over a period of hundreds of millions of years. This region is recognized as one of the finest earth science laboratories in the world. New discoveries and analyses of the fossil record here are answering questions, solving mysteries, and making connections that help us understand the history of life worldwide. CHRISTA SADLER, author of the Geology pages, is a geologist, guide, and educator from Flagstaff, Arizona. She has worked on rivers throughout the Southwest and Alaska, and in Ecuador, and has spent the last 14 years as a guide and trip leader on the Colorado River in Grand Canyon. In addition to occasionally teaching introductory geology and paleontology at Northern Arizona University in Flagstaff, she works as a geology instructor for the Grand Canyon Field Institute, and runs geology programs for park service personnel at Grand Canyon National Park. She is currently working on two books, one about the fossil history of the Colorado Plateau and its national parks, the other a sequel to her first anthology of Colorado River stories.

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