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Author:
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 568
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Author:
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 568
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Book Description
Author: Geological Survey of California
Publisher:
ISBN:
Category : Botany
Languages : en
Pages : 532
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 276
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Author:
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 296
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Author: Geological Survey (U.S.)
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 368
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Book Description
Author: Alan J. Kohn
Publisher: Princeton University Press
ISBN: 069113538X
Category : Nature
Languages : en
Pages : 476
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Book Description
Conus is the largest genus of animals in the sea, occurring throughout the world's tropical and subtropical oceans and contributing significantly to marine biodiversity. The shells of these marine mollusks are prized for their amazing variety and extraordinary beauty. The neurotoxic venoms they produce—injected by a hollow, harpoon-like tooth into prey animals that are then paralyzed and swallowed whole—have a range of pharmaceutical applications, from painkillers to antidepressants. This beautifully illustrated book identifies 53 valid species of the southeastern United States and the Caribbean, a region that supports a diverse but taxonomically challenging group of Conus. Introductory chapters cover the evolution and phylogeny of the genus, and notes on methodology are provided. Detailed species accounts describe key identification features, taxonomy, distribution, ecology, toxicology, life history, and evolutionary relationships. The book includes more than 2,100 photos of shells on 109 splendid color plates; more than 100 additional photos, many depicting live animals in color; and 35 color distribution maps. Identifies 53 valid species—the first reassessment of western Atlantic Conus in more than seventy years Features more than 2,100 photos of shells on 109 color plates Blends the traditional shell-character approach to identification with cutting-edge shell and radular tooth morphometrics and molecular genetic analyses Includes color images of live animals as well as color distribution maps
Author: P. J. Cook
Publisher: Cambridge University Press
ISBN: 9780521333702
Category : Nature
Languages : en
Pages : 486
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Book Description
Marine phosphorites, the principal raw material for phosphatic fertilizers, do not occur uniformly through time and space. The origin of these unusual sedimentary rocks appears to be related mainly to marine biological productivity, often associated with upwelling currents during certain intervals of geological time. This book examines the environmental setting and resulting phosphorites which formed during the Miocene, one of the major and most recent phosphogenic periods throughout the geologic record. In addition, an oceanographic perspective is given by investigations of modern oceanic environments where phosphorites are presently forming. Together, the geologic and marine approaches provide a complete outlook on this important mineral resource. This book is the third of four reference volumes which together cover the achievements of the International Geological Correlation Programme Project 156 (Phosphorites) during the ten years of the project's existence.
Author: Judith Terry Smith
Publisher:
ISBN:
Category : Paleontology
Languages : en
Pages : 244
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Book Description
Thirty-nine taxa, many of them index species, are described and illustrated; their biostratigraphic and chronostratigraphic significance are related to tectnostratigraphic settings.
Author:
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 756
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Book Description
Author: Harvard University. Museum of Comparative Zoology
Publisher:
ISBN:
Category : Zoology
Languages : en
Pages : 786
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