Whether a sea monster's bones weathering from limestone, a serrated T. rex tooth the size of a banana, or a tiny trilobite staring back with calcite eyes, fossils provide the only tangible evidence of creatures long vanished from our planet. Fossils shows how our understanding of these remains has evolved over time and how fossils are interpreted to resurrect lost worlds. Fledgling paleontologists will learn how professionals collect and display fossils as well as how fossils are used to tell geological time and reveal Earth's 4.6 billion-year history. The book concludes by surveying the variety of once-missing fossil links in the development of our own species.