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Sinopsis
Excerpt from The Evolution and Distribution of Fishes
The impression was, therefore, almost unwillingly forced in on the writer's mind, now fully forty years ago, that during the great Carboniferous epoch a practically continuous deposit of freshwater strata with typical plant and fish enclosures gave rise to the foundation beds or Calciferous Sandstone series of that system; that then an extensive though not deep submergence of land occurred under the sea, during which the Carboniferous Limestone was formed as a great marine deposit. Even then however occasional elevation for a longer or shorter time permitted the development Of a nearby land flora and invasion again of teeming freshwater fishes in lakes or swamps of that per iod. These however showed no trace Of existence in marine strata. Finally, during deposit Of the Coal Measures, freshwater fishes that were very different in type from those of the lower rocks, were met with in ironstone in shale, or in sandstone strata that alternated with and often shaded into coal beds.
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Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com
This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
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Excerpt from The Evolution and Distribution of Fishes
The impression was, therefore, almost unwillingly forced in on the writer's mind, now fully forty years ago, that during the great Carboniferous epoch a practically continuous deposit of freshwater strata with typical plant and fish enclosures gave rise to the foundation beds or Calciferous Sandstone series of that system; that then an extensive though not deep submergence of land occurred under the sea, during which the Carboniferous Limestone was formed as a great marine deposit. Even then however occasional elevation for a longer or shorter time permitted the development Of a nearby land flora and invasion again of teeming freshwater fishes in lakes or swamps of that per iod. These however showed no trace Of existence in marine strata. Finally, during deposit Of the Coal Measures, freshwater fishes that were very different in type from those of the lower rocks, were met with in ironstone in shale, or in sandstone strata that alternated with and often shaded into coal beds.
About the Publisher
Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com
This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
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Excerpt from The Evolution and Distribution of Fishes
In 1918 the writer published a volume that was entitled "The Causes and Course of Organic Evolution." A section of it was devoted to an inquiry into the environal relation of plants and animals, as determining largely their distribution in time and space. The conclusion was then reached, that organisms evolved first in freshwater areas, and only by degrees spread into marine surroundings.
During his inquiries the author gradually concluded that fishes might form the most important biological group by which to test the value of such a conclusion. For in the volume named he presented short details of their past and present history, which seemed to indicate that they at first evolved amid freshwater surroundings. Field studies also made by the writer during his earlier scientific career and subsequently, strongly pointed in like direction. But some details that either weakened the position, or that claimed further investigation, accumulated amid the abundant evidence that proved to be favorable. The writer therefore resolved to make as thorough a comparison as possible of the groups of fishes, and even of specific genera amongst these.
The outcome is seen in part in the present volume, which represents the almost continuous labors of the past six years. As the author pursued his detailed researches, some originally puzzling conditions gradually began to have a definite meaning attached to them. Thus the presence of abundant fossilized fish remains in zones of cannel coal, and their absence from ordinary coal strata; the like occurrence of freshwater fishes and of related organisms ecologically in the oil shales of the Edinburgh Coal Field that the writer studied for years in his earlier career; the peculiar character, the chemical composition, and the fossilized fish remains, of the marls that he studied in mature years from New Jersey to Florida, all had welcome light thrown on them, at the same time that the evolutionary history of fishes unfolded in its manifold ramifications.
About the Publisher
Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com
This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
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The Evolution and Distribution of Fishes (Classic Reprint)
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Paperback. Condición: New. Print on Demand. This book challenges a long-held scientific belief that animal life, particularly fish, originated in the ocean and only later ventured into freshwater environments. The author, a renowned botanist and palaeontologist, argues for a freshwater origin of fish, drawing on his extensive fieldwork and years of research into fossil remains. Examining the fossil record, he reveals striking evidence of freshwater fish populations flourishing in ancient times, predating the appearance of marine fish in the fossil record. This book goes beyond a mere cataloguing of fossils, offering a detailed exploration of the complex interplay between geological changes, environmental pressures, and the evolutionary trajectory of fish. The author's insights into the environment of early fish, particularly the importance of freshwater habitats and thermal springs, provide a fascinating and previously unexplored perspective on the development of life on Earth. By connecting the dots between geological conditions and the evolution of fish, this book offers a compelling and thought-provoking reevaluation of our understanding of fish origins and the broader history of life on Earth. 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. Nº de ref. del artículo: 9781332301447_0
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The Evolution and Distribution of Fishes (Classic Reprint)
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Forgotten Books, 2015
ISBN 10: 1332301444
ISBN 13: 9781332301447
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