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The Correlation of Geological Faunas: A Contribution to Devonian Paleontology (Classic Reprint) - Brossura
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Excerpt from The Correlation of Geological Faunas: A Contribution to Devonian Paleontology
In the year 1881 I began a series of investigations for the purpose of discovering the laws which determine the association of fossils in fauna] aggregates and their modifications in relation to geographical distribution and to vertical succession, in order to apply those laws as guides to the correlation and classification of geological formations. While these investigations have been in progress many other workers have joined in the search. Many statistics have been gathered, and observations have been extended over a wide field. A few important results have been attained, and the nature of the problem is now more clearly understood than at the outset. It seems, therefore, that this is a fitting time to review the progress already made, and to point out the more prominent results achieved and the paths along which future investigations may be guided with most promise of success.
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The Correlation of Geological Faunas: A Contribution to Devonian Paleontology
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Paperback. Condizione: New. Print on Demand. This book chronicles the endeavors of 20th-century geologist Henry Shaler Williams to unlock the laws governing association and variation in the fossil record, in order to determine their utility for the critical dating and classification of geological formations. Scientific thought of the time held that each distinct geological formation contained its own unique set of fossils, and that new species appeared abruptly in the fossil record only to vanish and be replaced entirely by a novel group with the advent of the next stratum. Williams, however, found that the compositions of fossil assemblages varied significantly even within small geographic areas, and that some species recurred in widely separated strata. His book presents a compelling case for fossil assemblages as dynamic entities, existing in a state of delicate equilibrium with their surroundings, and constantly shifting and transforming in response to changing environmental conditions over time. This paradigm shift in the field of paleontology opened the door to a more nuanced and chronologically refined understanding of the history of plant and animal life on our planet. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item. Codice articolo 9780259200468_0
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PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000. Codice articolo LW-9780259200468
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