This book marked my beginning into my field of specialty within the geosciences, ichnology. Reading this book opened my eyes to the diversity of life that dwells within sediment and soil, unseen, but vital to the function of healthy ecosystems. It also taught me how to recognize and interpret the fossilized remains of the activity of these organisms, trace fossils. I have used this book to teach both in the classroom and while conducting research and always enjoy sharing it with my students.