This book presents the multidisciplinary results of an extensive underwater excavation in north Florida which yields the most complete results of interactions between early Paleoindians and late Pleistocene megafauna, especially Mammut americanum (American Mastodon), in a rich environmental context in eastern North America. It provides fundamental insights into two urgent issues: "The Peopling of the Americas"; and "The Extinction of the Megafauna."

The authors describe and illustrate their unique methods of precise underwater excavations. They show how these techniques allowed them to collect a diversity of zoological, botanical and cultural material with outstanding organic preservation.

This wealth of prehistoric evidence was recovered during twenty years of delving into an ancient sinkhole in the bottom of the Aucilla River. The nearly continuous sequence of fine-grained sediments, with an abundance of carbon dates, place the climatic and environmental history of this area in a global context of late glacial climatic cycles. The deepest strata produce clear evidence that the first Floridians lived and hunted here some 14,000 years ago, indicating that this southeastern culture preceded classic Clovis culture in western North America.

Clever studies of stable isotopes tell that the Mastodons migrated north out of Florida into glacial terrain during the winter and spring and their digesta, which also contain steroids and epithelial cells, display a rich summer diet.

The last section of the book provides a wealth of new evidence from the early Holocene about the flora and climate and how early Archaic people subsisted after the megafauna became extinct.

An excellentcolor photo section expresses the unique setting and adventure of this project, extensively supported by National Geographic Society.

"A monument of interdisciplinary scientific analysis and reporting, and absolutely essential reading for anyone interested in the early human settlement of the Americas." David G. Anderson, Department of Anthropology, The University of Tennessee, Knoxville, TN, USA.

"An excellent array of interdisciplinary studies conducted at an important site offering new and exciting clues on the origins of the First Americans" Dr. Stanford, Department of Archeology, Smithsonian Institution, Washington, DC, USA

Two rather different elements combine to explain the origin of this volume: one scientific and one personal. The broader of the two is the scientific basis-the time for such a volume had arrived. Geology had made remarkable progress toward an understanding of the phys ical history of the Caribbean Basin for the last 100 million years or so. On the biological side, many new discoveries had elucidated the distributional history of terrestrial orga nisms in and between the two Americas. Geological and biological data had been combined to yield the timing of important events with unprecedented resolution. Clearly, when each of two broad disciplines is making notable advances and when each provides new insights for the other, the rewards of cross-disciplinary contacts increase exponentially. The present volume represents an attempt to bring together a group of geologists, paleontologists and biologists capable of exploiting this opportunity through presentation of an interdisciplinary synthesis of evidence and hypothesis concerning interamerican connections during the Cretaceous and Cenozoic. Advances in plate tectonics form the basis for a modern synthesis and, in the broadest terms, dictate the framework within which the past and present distributions of organisms must be interpreted. Any scientific dis cipline must seek tests of its conclusions from data outside of its own confines."

This book presents the multidisciplinary results of an extensive underwater excavation in north Florida. This yielded the most complete results of interactions between early Paleoindians and late Pleistocene megafauna, in a rich environmental context in eastern North America. The data provides fundamental insights into "the Peopling of the Americas" and "The Extinction of the Megafauna". An excellent color photo section expresses the uniqueness of this project.

From the preface: "Mr. Renz has assembled a friendly read from the standpoint of a serious, well-read amateur. His work promises to be an excellent educational guide for those interested in paleontology or seeking information about their fortuitous discovery of fossil remains."--James S. Dunbar, archaeological field supervisor, Florida Bureau of Archaeological Research With boundless enthusiasm, Mark Renz stumbles onto the skeletal remains of fierce saber-toothed cats, gentle sea cows, massive mammoths and mastodons, Volkswagen-size armadillos, and an ancient 5-ton giant ground sloth, and then shares these experiences in a humorous, illustrated book for beginning fossil collectors. Want to look for fossils yourself but not sure how to get started? Renz tells how and where to hunt and how to preserve your finds for another million years, and he provides more than 250 photographs that help you to identify those bones and teeth and distinguish a prehistoric bison from a farmer's lost cow. He also provides information about what's there to be found, the hurdles and hazards to be overcome, and the legalities to be observed. Guided by an appreciation for the professional paleontologist and also for the laws that regulate his hobby, Renz explains, for example, why it is okay to dig for fossils in a state-owned creek bed (providing one possesses a state permit and does not dig in a state park), and why it is illegal to engage in the same activity in search of artifacts. With writing that's free of technical jargon but full of love for fossiling, this illustrated book will inspire you to explore the huge number of rich fossil deposits in Florida that can be found with just a shovel and a keen eye.