Traveling Prehistoric Seas

Until recently the theory that people could have traversed large expanses of ocean in prehistoric times was considered pseudoscience. But recent discoveries in places as disparate as Australia, Labrador, Crete, California, and Chile open the possibility that ancient oceans were highways, not barriers, and that ancient people possessed the means and motives to traverse them. In this brief, thought-provoking, but controversial book Alice Kehoe considers the existing evidence in her reassessment of ancient sailing. Her book-critically analyzes the growing body of evidence on prehistoric sailing to help scholars and students evaluate a highly controversial hypothesis;-examines evidence from archaeology, anthropology, botany, art, mythology, linguistics, maritime technology, architecture, paleopathology, and other disciplines;-presents her evidence in student-accessible language to allow instructors to use this work for teaching critical thinking skills.

Alice Kehoe uses critical analysis of large bodies of interdisciplinary evidence to help scholars and students reevaluate the highly controversial theory that people sailed large distances across oceans in ancient times.

In the days when dinosaurs dominated the earth, their marine counterparts - every bit as big and ferocious - reigned supreme in prehistoric seas. In this book, Richard Ellis takes us back to the Mesozoic era to resurrect the fascinating lives of these giant seagoing reptiles. fierce predators, speculates on their habits, and tells how they eventually became extinct - or did they? He traces the 200-million-year history of the great ichthyosaurs, plesiosaurs and mosasaurs who swam the ancient oceans - and who may, according to some, still frequent the likes of Loch Ness. animal that looked like a crocodile crossed with a shark the size of a small yacht. With its impossibly long neck, Plesiosaurus conybeari has been compared to a giant snake threaded through the body of a turtle. At a length of nearly 60 feet, Mosasaurus hoffmanni boasted powerful jaws that could crunch up even the hardest-shelled giant sea turtle. And Kronosaurus queenslandicus, perhaps the most formidable of the lot, had a skull nine feet long - more than twice that of Tyrannosaurus rex - with teeth to match. reconstruct their lives and habitats. Their fossils have been found all over the world - in Europe, Australia, Japan and even Kansas - in lands that once lay on the floors of Jurassic and Triassic seas. Along the way, the book also provides intriguing insights into and entertaining tales about the work, discoveries and competing theories that compose the world of vertebrate paleontology. The text is also accompanied by Ellis' own illustrations of how these creatures probably appeared and, through these likenesses, we are invited to speculate on their locomotion, their predatory habits and their lifestyles.

The nautical dimension of prehistory has not so far received the attention it deserves. It is also too often assumed that early man was land bound, yet this is demonstrably not the case. Recent research has shown that man travelled and tracked over greater distances and at a much earlier date than has previously been thought possible. Some of these facts can be explained only by man's mastery of water transport from earliest times. This book, by an acknowledged expert on prehistoric sea-craft, examines these problems looking at the new archaeological information in the light of the author's nautical knowledge. The result is a detailed account of man's use of inland and ocean-going craft from earliest times until the dawn of recorded history. All forms of evidence are critically assessed, from the vessels of Ancient Egypt to the Chinese junk, to present of comprehensive picture of the vessels men have built through the ages, and of the variety of ways in which they have been used.

Graceful, succinct prose and engaging illustrations trace the evolution of life on Earth out of the blue and back again. Clear and inviting nonfiction prose, vetted by scientists--together with lively illustrations and a time line--narrate how life on Earth emerged "out of the blue." It began in the vast, empty sea when Earth was young. Single-celled microbes too small to see held the promise of all life-forms to come. Those microbes survived billions of years in restless seas until they began to change, to convert sunlight into energy, to produce oxygen until one day--Gulp!--one cell swallowed another, and the race was on. Learn how and why creatures began to emerge from the deep--from the Cambrian Explosion to crustaceans, mollusks to fishes, giant reptiles to the rise of mammals--and how they compare to the animals we know today, in a lively and accessible outing into the prehistoric past that boils a complex subject down to its lyrical essence.

"In this long-awaited sequel Kirk Johnson and Ray Troll are back on a road trip - driving, flying, and boating their way from Baja, California to northern Alaska in search of the fossil secrets of North America's Pacific coast. They hunt for fossils, visit museums, meet scientists and paleonerds, and sleuth out untold stories of extinct worlds. As one of the oldest coasts on earth, the west coast is a rich ground for fossil discovery. Its wonders include extinct marine mammals, pygmy mammoths, oyster bears, immense ammonites, shark-bitten camels, polar dinosaurs, Alaskan palms, California walruses, and a lava-baked rhinoceros. Join in for a fossil journey through deep time and discover how the west coast became the place it is today."--Provided by publisher.

Paints a compelling picture of impressive pre-Columbian cultures and Old World civilizations that, contrary to many prevailing notions, were not isolated from one another In Ancient Ocean Crossings: Reconsidering the Case for Contacts with the Pre-Columbian Americas, Stephen Jett encourages readers to reevaluate the common belief that there was no significant interchange between the chiefdoms and civilizations of Eurasia and Africa and peoples who occupied the alleged terra incognita beyond the great oceans. More than a hundred centuries separate the time that Ice Age hunters are conventionally thought to have crossed a land bridge from Asia into North America and the arrival of Columbus in the Bahamas in 1492. Traditional belief has long held that earth’s two hemispheres were essentially cut off from one another as a result of the post-Pleistocene meltwater-fed rising oceans that covered that bridge. The oceans, along with arctic climates and daunting terrestrial distances, formed impermeable barriers to interhemispheric communication. This viewpoint implies that the cultures of the Old World and those of the Americas developed independently. Drawing on abundant and concrete evidence to support his theory for significant pre-Columbian contacts, Jett suggests that many ancient peoples had both the seafaring capabilities and the motives to cross the oceans and, in fact, did so repeatedly and with great impact. His deep and broad work synthesizes information and ideas from archaeology, geography, linguistics, climatology, oceanography, ethnobotany, genetics, medicine, and the history of navigation and seafaring, making an innovative and persuasive multidisciplinary case for a new understanding of human societies and their diffuse but interconnected development.

Describes various prehistoric sea creatures that lived at the same time as the dinosaurs, including the placodus, mosasaurus, and plesiosaurus.

Color artwork and detailed captions journey underwater to capture the prehistoric world of an array of extinct animals, in the companion volume to the Discovery Channel special