Toarcian (early Jurassic) Ammonoids from Western North America PDF Download
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Author: G. K. Jakobs
Publisher:
ISBN:
Category : Ammonoidea
Languages : en
Pages : 148
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Book Description
Toarcian (Early Jurassic) strata in the Queen Charlotte Islands have yielded a well-preserved and diverse ammonite fauna that provides a framework for a regional ammonite zonation for western North America described in this report. Other localities, particularly in southern Alaska and north- western British Columbia, have provided additional material contributing to the development of this zonation, which is of prime importance in determining the age of sedimentary strata and the relative timing of tectonic events. The report describes the biostratigraphy of the five western North American Toarcian ammonite zones, the occurrence and stratigraphy of Toarcian fossil occurrences in the western Cordillera, Pacific Northwest, and Queen Charlotte Islands, and biostratigraphic correlations with other areas including Europe. Systematic paleontological descriptions are provided of fossil ammonoids. The appendix includes fossil specimen locality data.
Author: G. K. Jakobs
Publisher:
ISBN:
Category : Ammonoidea
Languages : en
Pages : 148
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Book Description
Toarcian (Early Jurassic) strata in the Queen Charlotte Islands have yielded a well-preserved and diverse ammonite fauna that provides a framework for a regional ammonite zonation for western North America described in this report. Other localities, particularly in southern Alaska and north- western British Columbia, have provided additional material contributing to the development of this zonation, which is of prime importance in determining the age of sedimentary strata and the relative timing of tectonic events. The report describes the biostratigraphy of the five western North American Toarcian ammonite zones, the occurrence and stratigraphy of Toarcian fossil occurrences in the western Cordillera, Pacific Northwest, and Queen Charlotte Islands, and biostratigraphic correlations with other areas including Europe. Systematic paleontological descriptions are provided of fossil ammonoids. The appendix includes fossil specimen locality data.
Author: Geological Survey of Canada
Publisher:
ISBN:
Category :
Languages : en
Pages : 137
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Book Description
Author: Andrew Caruthers
Publisher:
ISBN: 9780877105220
Category :
Languages : en
Pages :
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Author: Andrew Harry Caruthers
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Gerta Keller
Publisher: Geological Society of America
ISBN: 0813725054
Category : Science
Languages : en
Pages : 468
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Book Description
"Comprises articles stemming from the March 2013 international conference at London's Natural History Museum. Researchers across geological, geophysical, and biological disciplines present key results from research concerning the causes of mass extinction events"--
Author: Neil H. Landman
Publisher: Springer Science & Business Media
ISBN: 1475791534
Category : Science
Languages : en
Pages : 857
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Book Description
Renowned researchers summarize the current knowledge on ammonoid paleobiology. The book begins with a description of the systematic position of the Ammonoidea within the Cephalopoda, providing the phylogenetic framework for the rest of the book. Following discussions include soft- and hard-part morphology of ammonoids, rate of growth and ontogeny, and taphonomy and ecology. Closing chapters explore the distribution of ammonoids in time and space as well as their extinction at the end of the Cretaceous. With its diverse viewpoints and new material, this resource will benefit researchers and graduate students in paleontology, marine biology, and evolutionary biology.
Author: Geological Survey (U.S.)
Publisher:
ISBN:
Category :
Languages : en
Pages : 84
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Author:
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 334
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Author:
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 656
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Book Description
Author: Geological Survey (U.S.)
Publisher:
ISBN:
Category :
Languages : en
Pages :
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