The Beginning Of The Age Of Mammals

The Beginning of the Age of Mammals PDF
Author: Kenneth D. Rose
Publisher: JHU Press
ISBN: 9780801884726
Size: 47.20 MB
Format: PDF, ePub
Category : Business & Economics
Languages : en
Pages : 428
View: 2788

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Mammals From The Age Of Dinosaurs

Mammals from the Age of Dinosaurs PDF
Author: Zofia Kielan-Jaworowska
Publisher: Columbia University Press
ISBN: 0231119186
Size: 46.43 MB
Format: PDF
Category : Science
Languages : en
Pages : 700
View: 4305

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Few aspects of American military history have been as vigorously debated as Harry Truman's decision to use atomic bombs against Japan. In this carefully crafted volume, Michael Kort describes the wartime circumstances and thinking that form the context for the decision to use these weapons, surveys the major debates related to that decision, and provides a comprehensive collection of key primary source documents that illuminate the behavior of the United States and Japan during the closing days of World War II. Kort opens with a summary of the debate over Hiroshima as it has evolved since 1945. He then provides a historical overview of thye events in question, beginning with the decision and program to build the atomic bomb. Detailing the sequence of events leading to Japan's surrender, he revisits the decisive battles of the Pacific War and the motivations of American and Japanese leaders. Finally, Kort examines ten key issues in the discussion of Hiroshima and guides readers to relevant primary source documents, scholarly books, and articles.

The Beginning Of The Age Of Dinosaurs

The Beginning of the Age of Dinosaurs PDF
Author: Kevin Padian
Publisher: Cambridge University Press
ISBN: 9780521367790
Size: 66.11 MB
Format: PDF, ePub
Category : Science
Languages : en
Pages : 404
View: 7593

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Around 210 million years ago, life on Earth experienced sweeping changes. Many archaic reptiles and mammalian predecessors became extinct and were replaced by dinosaurs, pterosaurs, crocodiles, turtles, mammals, and essentially all of the major modern vertebrate groups except the birds. This period of change, which took place over a period of approximately five to ten million years, ushered in the beginning of the 'Age of Dinosaurs,' a period that lasted 160 million years to the end of the Cretaceous 65 million years ago. In the past decade, paleontologists have come to know a great deal more about this crucial interval of time. New discoveries, ideas, and insights from scientists in many related- disciplines have created new paradigms about the beginning of the 'Age of Dinosaurs.' What were the animals that preceded the dinosaurs like? How did the dinosaurs originate, and what do we know of their early history? Was their ascent tied to evolutionary innovations, global climatic and ecological changes, or just chance factors? How do paleontologists decide about the evidence preserved in the fossil record, and what areas now require major thought and reevaluation? In this book, 31 specialists in the paleontology of this era consider these and other questions related to Late Triassic and Early Jurassic times - the beginning of the 'Age of Dinosaurs,' its fauna, flora, climate, stratigraphic relationships, and major evolutionary changes. The book is divided into sections on background, Late Triassic taxa and faunas, changes across the boundary, Early Jurassic taxa and faunas, and major macroevolutionary patterns. This comprehensive volume is richly illustrated and is intended for students and professionals in the areas of paleontology, evolutionary biology, geology, and vertebrate zoology. Introductory and summary chapters are provided to acquaint the non-specialist with the issues and the setting of this interval of time in which the ancestral components of the modem fauna, as well as the Dinosauria, first appeared to rule the Earth.

The Age Of Everything

The Age of Everything PDF
Author: Matthew Hedman
Publisher: University of Chicago Press
ISBN: 0226322947
Size: 16.99 MB
Format: PDF, ePub, Docs
Category : Science
Languages : en
Pages : 264
View: 7277

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Taking advantage of recent advances throughout the sciences, Matthew Hedman brings the distant past closer to us than it has ever been. Here, he shows how scientists have determined the age of everything from the colonization of the New World over 13,000 years ago to the origin of the universe nearly fourteen billion years ago. Hedman details, for example, how interdisciplinary studies of the Great Pyramids of Egypt can determine exactly when and how these incredible structures were built. He shows how the remains of humble trees can illuminate how the surface of the sun has changed over the past ten millennia. And he also explores how the origins of the earth, solar system, and universe are being discerned with help from rocks that fall from the sky, the light from distant stars, and even the static seen on television sets. Covering a wide range of time scales, from the Big Bang to human history, The Age of Everything is a provocative and far-ranging look at how science has determined the age of everything from modern mammals to the oldest stars, and will be indispensable for all armchair time travelers. “We are used to being told confidently of an enormous, measurable past: that some collection of dusty bones is tens of thousands of years old, or that astronomical bodies have an age of some billions. But how exactly do scientists come to know these things? That is the subject of this quite fascinating book. . . . As told by Hedman, an astronomer, each story is a marvel of compressed exegesis that takes into account some of the most modern and intriguing hypotheses.”—Steven Poole, Guardian “Hedman is worth reading because he is careful to present both the power and peril of trying to extract precise chronological data. These are all very active areas of study, and as you read Hedman you begin to see how researchers have to be both very careful and incredibly audacious, and how much of our understanding of ourselves—through history, through paleontology, through astronomy—depends on determining the age of everything.”—Anthony Doerr, Boston Globe

Late Cretaceous And Cenozoic Mammals Of North America

Late Cretaceous and Cenozoic Mammals of North America PDF
Author: Michael O. Woodburne
Publisher: Columbia University Press
ISBN: 0231503784
Size: 48.68 MB
Format: PDF, Mobi
Category : Science
Languages : en
Pages : 400
View: 7267

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This book places into modern context the information by which North American mammalian paleontologists recognize, divide, calibrate, and discuss intervals of mammalian evolution known as North American Land Mammal Ages. It incorporates new information on the systematic biology of the fossil record and utilizes the many recent advances in geochronologic methods and their results. The book describes the increasingly highly resolved stratigraphy into which all available temporally significant data and applications are integrated. Extensive temporal coverage includes the Lancian part of the Late Cretaceous, and geographical coverage includes information from Mexico, an integral part of the North American fauna, past and present.

The Age Of Dinosaurs In Russia And Mongolia

The Age of Dinosaurs in Russia and Mongolia PDF
Author: Michael J. Benton
Publisher: Cambridge University Press
ISBN: 9780521545822
Size: 42.31 MB
Format: PDF, Mobi
Category : Science
Languages : en
Pages : 740
View: 244

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Unique reference volume covering major vertebrate fossil finds in former Soviet Union never before described in English.

Crossroads Of The Natural World

Crossroads of the Natural World PDF
Author: Tom Earnhardt
Publisher: UNC Press Books
ISBN: 146960700X
Size: 14.78 MB
Format: PDF, Mobi
Category : Nature
Languages : en
Pages : 328
View: 1168

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In this richly illustrated love letter to the wild places and natural wonders of North Carolina, Tom Earnhardt, writer and host of UNC-TV's Exploring North Carolina and lifelong conservationist, seamlessly ties deep geological time and forgotten species from our distant past to the unparalleled biodiversity of today. With varied topography and a climate that is simultaneously subtropical, temperate, and subarctic, he shows that North Carolina is a meeting place for living things more commonly found far to the north and south. Highlighting the ways in which the state is a unique ecological crossroads, Earnhardt's research, insightful writing, and stunning photography will both teach and inspire. Crossroads of the Natural World invites readers to engage a variety of topics, including the impacts of invasive species, the importance of forested buffers along our rivers, the role of naturalists, and the challenges facing the state in a time of climate change and sea-level rise. By sharing his own journey of more than sixty years, Earnhardt entices North Carolinians of every age to explore the natural diversity of our state.

Wild Horses Of The West

Wild Horses of the West PDF
Author: J. Edward De Steiguer
Publisher: University of Arizona Press
ISBN: 9780816528264
Size: 43.54 MB
Format: PDF, Docs
Category : Nature
Languages : en
Pages : 249
View: 2143

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When the Spanish explorers brought horses to North America, the horses were, in a sense, returning home. Beginning with their origins fifty million years ago, the wild horse has been traced from North America through Asia to the plains of SpainÕs Andalusia and then back across the Atlantic to the ranges of the American West. When given the chance, these horses simply took up residence in the landscape that their ancestors had roamed so long ago. In Wild Horses of the West, J. Edward de Steiguer provides an entertaining and well-researched look at one of the most controversial animal welfare issues of our timeÑthe protection of free-roaming horses on the WestÕs public lands. This is the first book in decades to include the entire story of these magnificent animals, from their evolution and biology to their historical integration into conquistador, Native American, and cowboy cultures. And the story isnÕt over. De Steiguer goes on to address the modern issuesÑ ecology, conservation, and land managementÑsurrounding wild horses in the West today. Featuring stunning color photographs of wild horses, this extremely thorough and engaging blend of history, science, and politics will appeal to students of the American West, conservation activists, and anyone interested in the beauty and power of these striking animals.

Beasts Of Eden

Beasts of Eden PDF
Author: David Rains Wallace
Publisher: Univ of California Press
ISBN: 9780520939400
Size: 32.44 MB
Format: PDF
Category : Science
Languages : en
Pages : 368
View: 2302

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Mammals first evolved at about the same time as dinosaurs, and their story is perhaps the more fascinating of the two—in part because it is also our own story. In this literate and entertaining book, eminent naturalist David Rains Wallace brings the saga of ancient mammals to a general audience for the first time. Using artist Rudolph Zallinger's majestic The Age of Mammals mural at the Peabody Museum as a frame for his narrative, Wallace deftly moves over varied terrain—drawing from history, science, evolutionary theory, and art history—to present a lively account of fossil discoveries and an overview of what those discoveries have revealed about early mammals and their evolution. In these pages we encounter towering mammoths, tiny horses, giant-clawed ground sloths, whales with legs, uintatheres, zhelestids, and other exotic extinct creatures as well as the scientists who discovered and wondered about their remains. We meet such memorable figures as Georges Cuvier, Richard Owen, Edward D. Cope, George Gaylord Simpson, and Stephen Jay Gould and learn of their heated disputes, from Cuvier's and Owen's fights with early evolutionists to present controversies over the Late Cretaceous mass extinction. Wallace's own lifelong interest in evolution is reflected in the book's evocative and engaging style and in the personal experiences he expertly weaves into the tale, providing an altogether expansive perspective on what Darwin described as the "grandeur" of evolution.

The Opossum

The Opossum PDF
Author: Willliam J. Krause
Publisher: William Krause
ISBN: 097859990X
Size: 41.49 MB
Format: PDF, ePub, Mobi
Category : Nature
Languages : en
Pages :
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The Origin Of The Earth

The Origin of the Earth PDF
Author: Thomas Chrowder Chamberlin
Publisher: CUP Archive
ISBN:
Size: 61.14 MB
Format: PDF, Kindle
Category : Cosmogony
Languages : en
Pages : 271
View: 5742

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Bringing Fossils To Life

Bringing Fossils to Life PDF
Author: Donald R. Prothero
Publisher: Columbia University Press
ISBN: 0231536909
Size: 63.87 MB
Format: PDF, ePub, Mobi
Category : Science
Languages : en
Pages : 672
View: 6389

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One of the leading textbooks in its field, Bringing Fossils to Life applies paleobiological principles to the fossil record while detailing the evolutionary history of major plant and animal phyla. It incorporates current research from biology, ecology, and population genetics, bridging the gap between purely theoretical paleobiological textbooks and those that describe only invertebrate paleobiology and that emphasize cataloguing live organisms instead of dead objects. For this third edition Donald R. Prothero has revised the art and research throughout, expanding the coverage of invertebrates and adding a discussion of new methodologies and a chapter on the origin and early evolution of life.