Kirk R. Johnson – författare

In this text, two of the world's leading experts in palynology and paleobotany provide a comprehensive account of the fate of land plants during the 'great extinction' about 65 million years ago. They describe how the time boundary between the Cretaceous and Paleogene Periods (the K-T boundary) is recognised in the geological record, and how fossil plants can be used to understand global events of that time. There are case studies from over 100 localities around the world, including North America, China, Russia and New Zealand. The book concludes with an evaluation of possible causes of the K-T boundary event and its effects on floras of the past and present. This book is written for researchers and students in paleontology, botany, geology and Earth history, and everyone who has been following the course of the extinction debate and the K-T boundary paradigm shift.

In this text, two of the world's leading experts in palynology and paleobotany provide a comprehensive account of the fate of land plants during the 'great extinction' about 65 million years ago. They describe how the time boundary between the Cretaceous and Paleogene Periods (the K-T boundary) is recognised in the geological record, and how fossil plants can be used to understand global events of that time. There are case studies from over 100 localities around the world, including North America, China, Russia and New Zealand. The book concludes with an evaluation of possible causes of the K-T boundary event and its effects on floras of the past and present. This book is written for researchers and students in paleontology, botany, geology and Earth history, and everyone who has been following the course of the extinction debate and the K-T boundary paradigm shift.

Published in Association with the New York Botanical GardenThe Manual of Leaf Architecture is an essential reference for describing, comparing, and classifying the leaves of flowering plants. This manual, illustrated with dozens of line drawings and more than 300 photographs of prepared stained leaves, provides a framework with comparative examples allowing consistent and detailed description of both modern and fossil leaves. This one-of-a-kind resource will be invaluable to a broad range of people who work with plants, from paleobotanists to systematists to tropical ecologists.The Manual allows for the description and identification of plants independently of their flowers, offering especially useful assistance in the case of fossil leaves (usually found in isolation) and tropical plants, whose flowering cycles can be brief and irregular, and whose fruits and flowers may be difficult to access. It provides long-needed guidelines for characterizing the organization, shape, venation, and margins of the leaves of flowering plants.Beginning with a set of illustrated definitions of leaf characters, this manual proceeds to define and illustrate the variations on each of these characters. The system presented here is based on a widely tested scheme but has been significantly expanded and refined through the detailed examination of thousands of living and fossil leaves.

For half a century, the artwork of Jay Matternes adorned the fossil halls of the Smithsonian National Museum of Natural History. These treasured Matternes murals documenting mammal evolution over the past 56 million years and dioramas showing dinosaurs from the Mesozoic Era are significant works of one of the most influential paleoartists in history. Simultaneously epic in size and scope and minutely detailed, they, also, provide a window into the study and interpretation of vertebrate paleontology and paleoecology. VISIONS OF LOST WORLDS presents these unparalleled works of art and, also, includes the sketches and drawings Matternes prepared as he planned the murals. Known for his technical genius and eye for detail, Matternes sketched from skeletons in museum collections and added muscle, skin and fur to bring mammals and dinosaurs from prehistory to vivid life. This book offers a close look at these works of art, a peek inside the artist's process and an examination of the works' impact and legacy.

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.