Were Jurassic dinosaurs social creatures? Can you determine the shape of a ram's horns from the evidence of its footprints? Paleontologist Martin Lockley answers these and other fascinating questions in this highly original tale of tracking and track making. Filed with fascinating anecdotes and surprising discoveries, The Eternal Trail initiates us into the art and science of tracking, while offering a poetic reflection on the continuity of life.

Most nonscientists are usually aware of fossils, and it is commonly believed that they are extremely rare. In fact, fossils are exceptionally common in many sedimentary rocks and are used extensively in geology for age dating, interpretation of ancient environments, and the discovery of natural resources. However, there is another type of fossil deposit that is truly rare. These rare fossil deposits, called Lagerstätten, preserve the remains of the soft tissues or the articulated skeletal remains of ancient creatures in truly astonishing fine detail. Some of these deposits are world-famous, such as the Burgess Shale, or Solnhofen but there are others dating from many different geological eras from the Paleozoic, up to the Eocene. Recently, a concerted effort has been made to understand the overall significance of these rare fossil deposits. Whereas in the past these deposits were considered novelties, modern researchers are trying to understand what they can tell us about ancient life and environments. New sophisticated techniques (including image and geochemical analyses) are providing enormous new contributions to our knowledge of Lagerstätten sites and to paleobiology in general. This volume describes many of the most famous Lagerstätten locations worldwide and is complete with over 70 superb halftones showing some of these exotic fossils in all their glory. Paleontologists are beginning to understand why such deposits occur, how they have varied since the advent of marine metazoan life, and how their presence effects our understanding of the evolution of life in the Earth's oceans. In this way, the study of Lagerstätten continues to move towards the mainstream of paleobiological, biological, and geological research, and away from its former status as the examination of mere curiosities. All those interested in these beautiful and sometimes enigmatic deposits will want to own this book.

Set in nineteenth-century England, The Dragon Seekers chronicles the amazing discoveries of the first fossilists, whose findings in geology and paleontology led to the discovery of the age of dinosaurs. The intriguing cast of characters includes Mary Anning, a working-class woman who became one of the most successful fossil collectors of all time; Thomas Hawkins, another amateur collector who "improved upon" fossils in order to increase their market value; the eccentric William Buckland, discoverer of the world's first dinosaur (Megalosaurus), and Richard Owen, an expert anatomist, who synthesized the discoveries of the age and ultimately coined the word "dinosaur" in 1842. Christopher McGowan takes us back to a time when the new sciences of geology and paleontology were as young and vibrant as genetic engineering is today. Through heated public debates on everything from the age of the earth to the notion of extinction, the Dragon Seekers initiated the shift from a biblical to a scientific interpretation of the remote past. In this way, they laid the intellectual groundwork for Darwin's revolutionary ideas, and launched a global obse

"Science is an essential element of American civilization. The historical study of American science -- the study of the individuals, the institutions, the ideas, and the experiments that together constitute the rich fabric of science in the United States -- is a lively and exciting field of scholarship. However, the knowledge and interpretations generated by this scholarship have not been easily accessible to the high school or college student or to the interested general reader. This volume has been written to furnish that access".

-- Marc Rothenberg

(from the Introduction)

The History of Science in the United States: An Encyclopedia brings together more than 200 scholars, ranging from the leading experts in their fields to young scholars presenting the fruits of their research. It offers a vast body of information hitherto scattered in numerous journals and specialized monographs. The book's coverage includes the roles of institutions and disciplines, the history of medicine and technology, the relationship between science and technology, and the major figures in the history of science in the United States.