Explore the rich fossil record of the Paleozoic Era, from the Cambrian (545 million years ago) through the Permian (almost 300 million years ago) with 650 high quality color photos and detailed, highly readable text. Following his successful work on the earliest fossils, the author now starts at that time in earth's history when life blossomed into a variety of body plans (phyla), and explores the successive periods of the Paleozoic Era. These include the Cambrian; the early, mid-, and late Ordovician; the Silurian and Devonian with their numerous marine fossils and some of the earth's first land plants and early fish; the diverse land plants and peculiar marine life of the Carboniferous (Mississippian and Pennsylvanian periods); and the fossils of the Permian, including many fossils of life forms that would go extinct in the worlds greatest extinction event. This is a great book for fossil hunters of all ilks and anyone interested in the early remnants of life. Those who collect or trade fossils will find a useful guide to the values of the fossils.