Author: Alan S. Horowitz
Publisher: Springer Science & Business Media
ISBN: 3642651119
Category : Science
Languages : en
Pages : 314

Get Book Here

Book Description
This is a book for beginners. Not geological beginners, because an introductory course in paleontology and some knowledge of the petrographic microscope is assumed, but for beginners in the study of the petrography of fossil constituents in sedimentary rocks. Fossils are studied for various reasons: 1) to provide chron ologic (time) frameworks, 2) to delineate rock units and ancient environments, or 3) to understand the past development (evolu tion) of living plants and animals. All of these uses may be at tained through petrographic studies of thin sections of fossils embedded in sedimentary rocks. Some knowledge of the appear ance of fossils in thin section is also fundamental for general stratigraphic studies, biofacies analyses, and is even useful in studying some metamorphic rocks. Commonly, fossils are essen tial for the delineation of carbonate rock types (facies or bio facies). We have written this book for sedimentary petrologists and stratigraphers, who routinely encounter fossils as part of their studies but who are not specialists in paleontology, and for students who are seeking a brief review and an introduction to the literature of the petrography of fossiliferous sedimentary rocks. Although experienced paleontologists may be appalled by the many generalized statements on size, shape, and principal fossil characters recited herein, we counter that we have had some success in introducing non-paleontologically oriented geologists to the use and identification of fossil constituents without using excessive paleontological terminology and detailed systematics.

Author: Alan Stanley Horowitz
Publisher:
ISBN: 9780549052753
Category : Carbonate rocks
Languages : en
Pages : 155

Get Book Here

Book Description
In the last experiment, the interaction between the APC's and the naive lymphocytes, prior to activation, is targeted with polyclonal antibody, anti-CD40L, and a fusion protein, CTLA4-Ig. Preventing activation of the naive lymphocytes in the immune system of the transplanted limb, we have succeeded in modulating GVHD in chimeric recipients. This approach is key in applying MAC in the clinical setting, and the basis for immunosuppression withdrawal.

Author: Alan Stanley Horowitz
Publisher:
ISBN:
Category : Carbonate rocks
Languages : en
Pages : 302

Get Book Here

Book Description

Author: Hervey Woodburn Shimer
Publisher:
ISBN:
Category : Paleontology
Languages : en
Pages : 486

Get Book Here

Book Description

Author: Peter A. Scholle
Publisher: AAPG
ISBN: 0891813586
Category : Nature
Languages : en
Pages : 459

Get Book Here

Book Description

Author: Peter Doyle
Publisher: John Wiley & Sons
ISBN: 1119029260
Category : Nature
Languages : en
Pages : 424

Get Book Here

Book Description
The first introductory palaeontology text which demonstrates the importance of selected fossil groups in geological and biological studies, particularly in understanding evolutionary patterns, palaeoenvironmental analysis, and stratigraphy. Part one explores several key concepts, such as the processes of fossil preservation, the determination of evolutionary patterns, and use of fossils and statigraphical tools. Part two introduces the main fossil groups of value in these applied fields. Part three concentrates on the examination of important case histories which demonstrate the use of fossils in diverse practical examples. Evolutionary studies, palaeoenvironmental analysis, and stratigraphical applications are documented using up-to-date examples supported by overviews of the principles.

Author: Hervey Woodburn Shimer
Publisher: Forgotten Books
ISBN: 9781330256404
Category : Science
Languages : en
Pages : 474

Get Book Here

Book Description
Excerpt from An Introduction to the Study of Fossils: Plants and Animals This little volume has grown out of a need experienced by the author during fifteen years of teaching paleontology. He has found that students come to the subject either with very little previous training in biology, or at best with a training which has not been along the lines that would definitely aid them in understanding fossils. Too often fossils are looked upon merely as bits of stone, differing only in form from the rocks in which they are embedded. Hence to awaken interest in them as once living animals and plants, connected by the wonderful chain of evolution with the animals and plants now living, has been the chief aim of the author's lectures and laboratory work upon introductory paleontology which he here presents. To this end certain living forms have first been discussed as types of their phyla or classes with especial reference to those features which will help the student to understand the related fossil forms considered later. The response which these living forms make to their environment is considered, where they live, how their life is maintained and how they perpetuate their kind. The relation of the soft body to the hard skeleton or shell is especially emphasized, since it is largely through this very intimate relationship that our interpretation of extinct life is made possible. The student may thus reconstruct from the hard parts preserved in the rocks the appearance of the once living animal. The discussion has been kept as free as possible from unnecessary technical terms. 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: Hervey Woodburn Shimer
Publisher:
ISBN:
Category : Paleontology
Languages : en
Pages : 496

Get Book Here

Book Description

Author: William Henry Matthews
Publisher:
ISBN:
Category : Fossils
Languages : en
Pages : 360

Get Book Here

Book Description

Author: Howel Williams
Publisher:
ISBN:
Category : Petrology
Languages : en
Pages : 424

Get Book Here

Book Description