Bulletin of the United States National Museum PDF Download
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Author: United States National Museum
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 970
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Book Description
Author: United States National Museum
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 970
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Book Description
Author: Frank Springer
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 100
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Book Description
This bulletin results from studies begun many years ago to clarify the record of the crinoid forms discussed herein and the confusion growing out of the excessive activity of some authors in species making.
Author: Frank Springer
Publisher: Palala Press
ISBN: 9781347054710
Category :
Languages : en
Pages : 74
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Book Description
This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Author: Frank Springer
Publisher: Forgotten Books
ISBN: 9780366258482
Category : History
Languages : en
Pages : 958
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Book Description
Excerpt from The Fossil Crinoid Genus Dolatocrinus and Its Allies This paper is the result of studies begun many years ago, with a view to clarifying the record of the crinoid forms herein discussed from the confusion growing out of the excessive activity of some authors in species making. The drawings of the Miller and Gurley types, and those for plates 1 to 4 on Comanthocrinus, Hadrocrinus, and Himerocflnue, were made by Mr. Kenneth M. Chapman of Santa Fe, New Mexico. The text-figures were prepared by my assistant, Dr. Herrick E. Wilson. In the preparation of the other figures upon Dolatocrinus I have had the assistance of Dr. R. S. Bassler in photographing the specimens, and of Miss Francesca Keser, of the United States Geological Survey staff, in retouching the prints, for which I extend to them my sincere thanks. 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.
Author: Frank Springer
Publisher:
ISBN:
Category : Crinoidea
Languages : en
Pages : 78
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Book Description
Author: United States National Museum
Publisher:
ISBN:
Category :
Languages : en
Pages : 75
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Book Description
Author: Hans Hess
Publisher: Cambridge University Press
ISBN: 9780521524407
Category : Nature
Languages : en
Pages : 310
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Book Description
Crinoids have graced the oceans for more than 500 million years. Among the most attractive fossils, crinoids had a key role in the ecology of marine communities through much of the fossil record, and their remains are prominent rock forming constituents of many limestones. This is the first comprehensive volume to bring together their form and function, classification, evolutionary history, occurrence, preservation and ecology. The main part of the book is devoted to assemblages of intact fossil crinoids, which are described in their geological setting in twenty-three chapters ranging from the Ordovician to the Tertiary. The final chapter deals with living sea lilies and feather stars. The volume is exquisitely illustrated with abundant photographs and line drawings of crinoids from sites around the world. This authoritative account recreates a fascinating picture of fossil crinoids for paleontologists, geologists, evolutionary and marine biologists, ecologists and amateur fossil collectors.
Author: Winifred Goldring
Publisher:
ISBN:
Category : Crinoidea, Fossil
Languages : en
Pages : 812
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Book Description
Author: Thomas Austin
Publisher: Forgotten Books
ISBN: 9780332534374
Category : Science
Languages : en
Pages : 212
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Book Description
Excerpt from A Monograph on Recent and Fossil Crinoidea: With Figures and Descriptions of Some Recent and Fossil Allied Genera Such a physical state Of things would not only satisfactorily account for the gradual introduction of animals and plants approaching to the existing Fauna and Flora, but would explain some other physiological questions of great interest. When investigating the lower fossiliferous rocks, we have frequently speculated on the probable physical conditions of the medium which enveloped our planet at the period of their deposition. If we adopt Professor Owen's ingenious and highly probable suggestion, and suppose the atmosphere, by its excess Of carbon, to have been a dense heavy fluid, whose specific gravity was only a few degrees lighter than water, we have a clear exposition Of the adaptation of the structure of molluscous animals, and the Ocean Lilies at remote geological epochs, to the peculiar physical conditions Of an atmosphere whose force Operated on the surface of the globe with a degree of energy much beyond the atmospheric pressure at the present time. 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.
Author: Frank Springer
Publisher:
ISBN:
Category : Camarocrinus
Languages : en
Pages : 116
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Book Description
