Your search for: paleontology

During an expedition in Sonora, Mexico, paleontologist Mark A. S. McMenamin unearthed fossils of creatures dated at approximately 600 million years old -- making them the oldest large body fossils ever discovered. These circular fossils, known as Ediacarans, seemed to defy explanation ...

During an expedition in Sonora, Mexico, paleontologist Mark A. S. McMenamin unearthed fossils of creatures dated at approximately 600 million years old -- making them the oldest large body fossils ever discovered. These circular fossils, known as Ediacarans, seemed to defy explanation. Representatives of marine life forms that existed in Precambrian times, as much as fifty million years before life on earth began to diversify rapidly, the specimens bore a superficial resemblance to jellyfish. A typical Ediacaran had a quilted body, three curving arms at the center, and a fringe of fine radial lines. McMenamin's curiosity was fueled by the puzzle of whether the Ediacarans were animals or some other type of organism. How could such complex forms of life appear so suddenly, without extensive records of prior evolution? Yet, this seems to be exactly what the Ediacarans had done. The Garden of Ediacara presents a mesmerizing documentary of a major scientific discovery, detailing McMenamin's trip to Namibia, where, with a party that included the renowned paleontologist Adolf Seilacher, the author investigates a spectacular cast made from a colony of fossils in the Nama desert. He chronicles the long, often futile search made by earlier scientists for Ediacara, which began more than a century ago in Europe, North America, and Africa, and the various types of Ediacaran fossils that have been uncovered in the years since. McMenamin concludes that Ediacarans were not animals because they never passed through the ball-shaped embryonic stage peculiar to known animal life forms. But, remarkably, Ediacarans seem to have developed a central nervous system and a brain independent from animal evolution. This startling conclusion has profound implications for our understanding of evolutionary biology, for it indicates that the path toward intelligent life was embarked upon more than once on this planet.

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 ...

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

In this adventure-filled narrative, science writer Richard Stone follows two groups of explorers -- one a Russian-Japanese team, the other a Frenchled consortium -- as they battle bitter cold, high winds, and supply shortages to carry out their quest. Armed with GPS, ground-penetrating radar, and ...

In this adventure-filled narrative, science writer Richard Stone follows two groups of explorers -- one a Russian-Japanese team, the other a Frenchled consortium -- as they battle bitter cold, high winds, and supply shortages to carry out their quest. Armed with GPS, ground-penetrating radar, and Soviet-era military helicopters, they seek an elusive prize: a mammoth carcass that will help determine how the creature lived, how it died -- and how it might be brought back to life.

A riveting tale of high-stakes adventure and scientific hubris, Mammoth is also an intellectual voyage through uncharted moral terrain, as we confront the promise and peril of resurrecting creatures from the deep past.

Mammoths, Sabertooths, and Hominids takes us on a journey through 65 million years, from the aftermath of the extinction of the dinosaurs to the glacial climax of the Pleistocene epoch; from the rain forests of the Paleocene and the Eocene, with their lemur-like primates, to the harsh landscape of ...

Mammoths, Sabertooths, and Hominids takes us on a journey through 65 million years, from the aftermath of the extinction of the dinosaurs to the glacial climax of the Pleistocene epoch; from the rain forests of the Paleocene and the Eocene, with their lemur-like primates, to the harsh landscape of the Pleistocene Steppes, home to the woolly mammoth. It is also a journey through space, following the migrations of mammal species that evolved on other continents and eventually met to compete or coexist in Cenozoic Europe. Finally, it is a journey through the complexity of mammalian evolution, a review of the changes and adaptations that have allowed mammals to flourish and become the dominant land vertebrates on Earth. With the benefit of recent advances in geological and geophysical techniques, Jordi Agustí and Mauricio Antón are able to trace the processes of mammalian evolution as never before; events that hitherto appeared synchronous or at least closely related can now be distinguished on a scale of hundreds or even dozens of thousands of years, revealing the dramatic importance of climactic changes both major and minor. Evolutionary developments are rendered in magnificent illustrations of the many extraordinary species that once inhabited Europe, detailing their osteology, functional anatomy, and inferred patterns of locomotion and behavior. Based on the latest research and field work, Mammoths, Sabertooths, and Hominids transforms our understanding of how mammals evolved and changed the face of the planet.