Cambrian Ocean World PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Cambrian Ocean World PDF full book. Access full book title Cambrian Ocean World by John Foster. Download full books in PDF and EPUB format.
Author: John Foster
Publisher: Indiana University Press
ISBN: 0253011884
Category : Science
Languages : en
Pages : 457
Get Book Here
Book Description
This volume, aimed at the general reader, presents life and times of the amazing animals that inhabited Earth more than 500 million years ago. The Cambrian Period was a critical time in Earth's history. During this immense span of time nearly every modern group of animals appeared. Although life had been around for more than 2 million millennia, Cambrian rocks preserve the record of the first appearance of complex animals with eyes, protective skeletons, antennae, and complex ecologies. Grazing, predation, and multi-tiered ecosystems with animals living in, on, or above the sea floor became common. The cascade of interaction led to an ever-increasing diversification of animal body types. By the end of the period, the ancestors of sponges, corals, jellyfish, worms, mollusks, brachiopods, arthropods, echinoderms, and vertebrates were all in place. The evidence of this Cambrian "explosion" is preserved in rocks all over the world, including North America, where the seemingly strange animals of the period are preserved in exquisite detail in deposits such as the Burgess Shale in British Columbia. Cambrian Ocean World tells the story of what is, for us, the most important period in our planet's long history.
Author: John Foster
Publisher: Indiana University Press
ISBN: 0253011884
Category : Science
Languages : en
Pages : 457
Get Book Here
Book Description
This volume, aimed at the general reader, presents life and times of the amazing animals that inhabited Earth more than 500 million years ago. The Cambrian Period was a critical time in Earth's history. During this immense span of time nearly every modern group of animals appeared. Although life had been around for more than 2 million millennia, Cambrian rocks preserve the record of the first appearance of complex animals with eyes, protective skeletons, antennae, and complex ecologies. Grazing, predation, and multi-tiered ecosystems with animals living in, on, or above the sea floor became common. The cascade of interaction led to an ever-increasing diversification of animal body types. By the end of the period, the ancestors of sponges, corals, jellyfish, worms, mollusks, brachiopods, arthropods, echinoderms, and vertebrates were all in place. The evidence of this Cambrian "explosion" is preserved in rocks all over the world, including North America, where the seemingly strange animals of the period are preserved in exquisite detail in deposits such as the Burgess Shale in British Columbia. Cambrian Ocean World tells the story of what is, for us, the most important period in our planet's long history.
Author: Rodney Allen Brooks
Publisher: MIT Press
ISBN: 9780262522632
Category : Computers
Languages : en
Pages : 220
Get Book Here
Book Description
Until the mid-1980s, AI researchers assumed that an intelligent system doing high-level reasoning was necessary for the coupling of perception and action. In this traditional model, cognition mediates between perception and plans of action. Realizing that this core AI, as it was known, was illusory, Rodney A. Brooks turned the field of AI on its head by introducing the behavior-based approach to robotics. The cornerstone of behavior-based robotics is the realization that the coupling of perception and action gives rise to all the power of intelligence and that cognition is only in the eye of an observer. Behavior-based robotics has been the basis of successful applications in entertainment, service industries, agriculture, mining, and the home. It has given rise to both autonomous mobile robots and more recent humanoid robots such as Brooks' Cog. This book represents Brooks' initial formulation of and contributions to the development of the behavior-based approach to robotics. It presents all of the key philosophical and technical ideas that put this "bottom-up" approach at the forefront of current research in not only AI but all of cognitive science.
Author: George Tod
Publisher: Cicerone Press Limited
ISBN: 1783627689
Category : Travel
Languages : en
Pages : 338
Get Book Here
Book Description
Dubbed 'the mountain connoisseurs' walk', the Cambrian Way stretches 479km between the mighty castles of Cardiff in the south and Conwy on the north coast. Traversing the heartland of Wales, the challenging route crosses the Brecon Beacons, the Cambrian Mountains and Snowdonia, passing through two national parks and visiting many of the country's iconic summits, including Pen y Fan, Pumlumon, Cadair Idris and Snowdon itself. It can be walked in three weeks (or in shorter sections) and is suitable for experienced hillwalkers with sound navigational skills. The guide presents the route in 21 stages, offering comprehensive route description illustrated with OS 1:50,000 mapping and elevation profiles. Details of accommodation and facilities are provided, along with a helpful trek planner showing their distribution along the route: although the trail passes through remote areas, it is possible to stay under a roof every night - though camping is also a possibility, should you prefer. There are background notes on Wales's history and geology and local points of interest, and a glossary of Welsh place-names, useful contacts and accommodation listings can be found in the appendices. From the Black Mountains to the Rhinogau, Glyderau and Carneddau, the route takes in lofty ridges, striking peaks and picturesque lakes. There are also fascinating glimpses into the country's ancient and more recent past: Iron Age hillforts, Norman castles, a Cistercian abbey, the Chartist Cave and relics from the mining industry. Offering superlative scenery, the Cambrian Way is a celebration of some of the best mountain walking Wales has to offer and promises a unique opportunity to immerse yourself in these celebrated landscapes.
Author: Stephen Jay Gould
Publisher: W. W. Norton & Company
ISBN: 0393245209
Category : Science
Languages : en
Pages : 350
Get Book Here
Book Description
"[An] extraordinary book. . . . Mr. Gould is an exceptional combination of scientist and science writer. . . . He is thus exceptionally well placed to tell these stories, and he tells them with fervor and intelligence."—James Gleick, New York Times Book Review High in the Canadian Rockies is a small limestone quarry formed 530 million years ago called the Burgess Shale. It hold the remains of an ancient sea where dozens of strange creatures lived—a forgotten corner of evolution preserved in awesome detail. In this book Stephen Jay Gould explores what the Burgess Shale tells us about evolution and the nature of history.
Author: D Erwin
Publisher: Bedford
ISBN: 9781936221035
Category : Education
Languages : en
Pages : 0
Get Book Here
Book Description
The Cambrian Period records one of the most extraordinary transitions in the history of life. Although animals may have first appeared nearly 700 million years ago, with the earliest sponges, their initial diversifications appear to have been modest until a richly diverse fossil fauna appeared abruptly about 170 million years later. In The Cambrian Explosion, Erwin and Valentine synthesize research from many fields to explain why there was such remarkable novelty of animal forms.
Author: ChatStick Team
Publisher: ChatStick Team
ISBN:
Category : History
Languages : en
Pages : 101
Get Book Here
Book Description
🌊 Embark on a Journey to Earth's Primordial Past with "Life's Great Unfolding: The Cambrian Explosion’s Legacy" 🦠🌏 Dive deep into one of the most fascinating periods in Earth's history with this captivating eBook. Unravel the mysteries of the Cambrian Explosion, a transformative epoch over 500 million years ago that marked a significant turning point in the evolution of life. 🔍 Inside the Book: Pre-Cambrian Prelude: Explore the Earth before the dawn of the Cambrian period and understand the factors leading to this evolutionary milestone. Burst of Life: Witness the rapid emergence of diverse, complex life forms that define the Cambrian seas. Evolutionary Innovations: Discover how new body plans and structures emerged, shaping the future of all complex life. Fossil Chronicles: Traverse the globe to significant fossil sites that provide a window into this ancient world. Ecosystem Dynamics: Delve into the intricate predator-prey relationships and ecological networks of the Cambrian era. Iconic Cambrian Species: Meet the enigmatic creatures of this period, from the peculiar Anomalocaris to other remarkable species. Scientific Breakthroughs: Learn about the modern technological advances that have revolutionized our understanding of the Cambrian period. 📘 Ideal for: History buffs, science enthusiasts, and anyone intrigued by the origins and evolution of life on our planet. 🌐 Experience the Wonders: "The Cambrian Explosion’s Legacy" offers a comprehensive and engaging exploration of this pivotal period. Through vivid descriptions and insights, this book brings to life the extraordinary diversity and complexity of ancient marine ecosystems. 📚 Get Your Copy Today: Delve into the pages of this fascinating eBook and discover the lasting legacy of the Cambrian Explosion on the evolution of life on Earth. A must-read for anyone passionate about the wonders of our natural world!
Author: Hou Xianguag
Publisher: John Wiley & Sons
ISBN: 0470999942
Category : Science
Languages : en
Pages : 248
Get Book Here
Book Description
The Chengjiang biota is one of the most remarkable fossil discoveries ever made. The Cambrian Fossils of Chengjiang is the first book in English to provide fossil enthusiasts with an overview of the fauna. 100 superb full color plates. First English language illustrated guide to this important fauna. A must-have for all palaeontologists worldwide. To see a collection of images from the book, click on the following link: http://www.blackwellpublishing.com/chengjiang
Author: Xian-guag Hou
Publisher: Wiley-Blackwell
ISBN: 9781405106733
Category : Science
Languages : en
Pages : 248
Get Book Here
Book Description
The Chengjiang biota is one of the most remarkable fossil discoveries ever made. The Cambrian Fossils of Chengjiang is the first book in English to provide fossil enthusiasts with an overview of the fauna. 100 superb full color plates. First English language illustrated guide to this important fauna. A must-have for all palaeontologists worldwide. To see a collection of images from the book, click on the following link: http://www.blackwellpublishing.com/chengjiang
Author: Charles River
Publisher:
ISBN:
Category :
Languages : en
Pages : 74
Get Book Here
Book Description
*Includes pictures *Includes a bibliography for further reading The early history of Earth covers such vast stretches of time that years, centuries, and even millennia become virtually meaningless. Instead, paleontologists and scientists who study geochronology divide time into periods and eras. The current view of science is that Earth is around 4.6 billion years old, and the first 4 billion years of its development are known as the Precambrian period. For the first billion years or so, there was no life in Earth. Then the first single-celled life-forms, early bacteria and algae, began to emerge. It's unclear where they came from or even if they originated on this planet at all, but this gradual development continued until around four billion years ago when suddenly (in geological terms) more complex forms of life began to emerge. Scientists call this time of an explosion of new forms of life the Paleozoic Era, and it stretched from around 541-250 million years ago (Mya). In the oceans and then on land, new creatures and plants began to appear in bewildering variety, and by the end of this period, life on Earth had diversified into a myriad of complex forms that filled virtually every habitat and niche available in the seas and on the planet's only continent, Pangea. Despite all of the scientific advances made in the past few centuries, including an enhanced understanding of Earth's geological past, very little is known about the planet's early history. It is generally accepted that the planet formed somewhere in the region of 4.5 billion years ago, and at some point, the first life appeared in the form of tiny, single-celled creatures, but scientists are unsure of what this life looked like. One of the problems for those seeking to trace the history of life on Earth is that modern scholars are almost entirely dependent on fossil records, but the earliest types of life left few fossils. The best fossils are formed from the bones and hard body parts of dead creatures, but the earliest types of life were so small that they had no bones or cartilage and thus left no fossils. Thus, even though the Precambrian Period (4,600-541 millions of years ago (Mya)) covers over 80% of the entire history of the planet, scientists have very little idea of what forms of life existed then. Then, as Earth entered the Cambrian Period, there was a relatively sudden increase in life form diversity throughout the oceans. Completely new forms of life, more complex and more diverse than anything that had been seen before, began to spread. This acceleration in the evolution of new forms of life was so dramatic that this has come to be known as the "Cambrian explosion." Although new species in the Cambrian explosion developed almost entirely in the oceans, the land was not entirely devoid of life. Though there were no plants or animals, mats of cyanobacteria and other types of microbes covered large terrestrial areas. Scientists have discovered the tracks of a creature that were left in mud that existed 551 Mya, and those tracks were left by leg-like appendages. Was this a fish-like creature that temporarily invaded the land, or was it something completely different than anything that exists today? There is no general consensus, but the Cambrian Period left a rich fossil record that provides a clear idea of the development of life during this time. At the same time, new discoveries are continually being made, and the more scientists discover about this mysterious period, the more their understanding of ancient Earth changes. The Cambrian Period: The History and Legacy of the Start of Complex Life on Earth looks at the development of the era, the extinction event that preceded it, and how life began to evolve during it. Along with pictures depicting important people, places, and events, you will learn about the Cambrian Period like never before.
Author: Thom Holmes
Publisher: Infobase Publishing
ISBN: 1438117663
Category : Earth sciences
Languages : en
Pages : 225
Get Book Here
Book Description
Discusses the Cambrian era in Earth's history, when the first forms of life appeared and began to flourish and evolve.
