CAMBRIAN EXPLOSION

2013-01-18 Education

Author : D Erwin
Release : 2013-01-18
Genre : Education
Kind : eBook
Book Rating : 035/5 ( reviews)

Book Synopsis CAMBRIAN EXPLOSION by : D Erwin

Download or read book CAMBRIAN EXPLOSION written by D Erwin. This book was released on 2013-01-18. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Cambrian Ocean World

2014-06-06 Science

Author : John Foster
Release : 2014-06-06
Genre : Science
Kind : eBook
Book Rating : 884/5 ( reviews)

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Book Synopsis Cambrian Ocean World by : John Foster

Download or read book Cambrian Ocean World written by John Foster. This book was released on 2014-06-06. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Wonderful Life: The Burgess Shale and the Nature of History

1990-09-17 Science

Author : Stephen Jay Gould
Release : 1990-09-17
Genre : Science
Kind : eBook
Book Rating : 209/5 ( reviews)

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Book Synopsis Wonderful Life: The Burgess Shale and the Nature of History by : Stephen Jay Gould

Download or read book Wonderful Life: The Burgess Shale and the Nature of History written by Stephen Jay Gould. This book was released on 1990-09-17. Available in PDF, EPUB and Kindle. Book excerpt: "[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.

Epigenetic Mechanisms of the Cambrian Explosion

2019-10-12 Science

Author : Nelson R Cabej
Release : 2019-10-12
Genre : Science
Kind : eBook
Book Rating : 126/5 ( reviews)

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Book Synopsis Epigenetic Mechanisms of the Cambrian Explosion by : Nelson R Cabej

Download or read book Epigenetic Mechanisms of the Cambrian Explosion written by Nelson R Cabej. This book was released on 2019-10-12. Available in PDF, EPUB and Kindle. Book excerpt: Epigenetic Mechanisms of the Cambrian Explosion provides readers with a basic biological knowledge and epigenetic explanation of the biological puzzle of the Cambrian explosion, the unprecedented rapid diversification of animals that began 542 million years ago. During an evolutionarily instant of ~10 million years, which represents only 0.3% of the time of existence of life on Earth, or less than 2% of the time of existence of metazoans, all of the 30 extant body plans, major animal groups (phyla) and several extinct groups appeared. The work helps address this phenomena and tries to answer remaining questions for evolutionary biology, epigenetics, and scientific researchers. The book recognizes and presents objective representations of alternative theories for epigenetic evolution in this period, with the author drawing on his epigenetic theory of evolution to explain the causal basis of the Cambrian explosion. Both empirical evidence and theoretical arguments are presented in support of this thought-provoking epigenetic theory. - Explains the Cambrian explosion from an entirely epigenetic view - Takes a causal rather than descriptive approach to the phenomenon - Allows for a broad readership, including those with only a basic biological knowledge, while maintaining scientific rigor

On the Origin of Phyla

2004-06-18 Science

Author : James W. Valentine
Release : 2004-06-18
Genre : Science
Kind : eBook
Book Rating : 486/5 ( reviews)

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Book Synopsis On the Origin of Phyla by : James W. Valentine

Download or read book On the Origin of Phyla written by James W. Valentine. This book was released on 2004-06-18. Available in PDF, EPUB and Kindle. Book excerpt: Owing its inspiration and title to On the Origin of Species, James W. Valentine's ambitious book synthesizes and applies the vast treasury of theory and research collected in the century and a half since Darwin's time. By investigating the origins of life's diversity, Valentine unlocks the mystery of the origin of phyla. One of the twentieth century's most distinguished paleobiologists, Valentine here integrates data from molecular genetics, evolutionary developmental biology, embryology, comparative morphology, and paleontology into an analysis of interest to scholars from any of these fields. He begins by examining the sorts of evidence that can be gleaned from fossils, molecules, and morphology, then reviews and compares the basic morphology and development of animal phyla, emphasizing the important design elements found in the bodyplans of both living and extinct phyla. Finally, Valentine undertakes the monumental task of developing models to explain the origin and early diversification of animal phyla, as well as their later evolutionary patterns. Truly a magnum opus, On the Origin of Phyla will take its place as one of the classic scientific texts of the twentieth century, affecting the work of paleontologists, morphologists, and developmental, molecular, and evolutionary biologists for decades to come. "A magisterial compendium . . . . Valentine offers a judicious evaluation of an astonishing array of evidence."—Richard Fortey, New Scientist "Truly a magnum opus, On the Origin of Phyla has already taken its place as one of the classic scientific texts of the twentieth century, affecting the work of paleontologists, morphologists, and developmental, molecular, and evolutionary biologists for decades to come."—Ethology, Ecology & Evolution "Valentine is one of the Renaissance minds of our time. . . . Darwin wisely called his best-known work On the Origin of the Species; the origin of the phyla is an even stickier problem, and Valentine deserves credit for tackling it at such breadth . . . . A magnificient book."—Stefan Bengtson, Nature

Popular eBooks

CAMBRIAN EXPLOSION

Cambrian Ocean World

Wonderful Life: The Burgess Shale and the Nature of History

Epigenetic Mechanisms of the Cambrian Explosion

On the Origin of Phyla

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