Trilobites from the Middle and Upper Ordovician Andersön Shale Formation in Jämtland and the Equivalent Killeröd Formation in Skåne, Sweden PDF Download
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Author: Kristina Månsson
Publisher:
ISBN: 9789186746353
Category : Paleontology
Languages : en
Pages : 21
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Author: Thomas Hansen
Publisher: Wiley-Blackwell
ISBN:
Category : Science
Languages : en
Pages : 228
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Book Description
The highly fossiliferous upper Darriwilian to lower Sandbian Elnes Formation of Norway presents an interesting insight into the general responses and preferences of Lower Palaeozoic faunas belonging to a stable, mud dominated middle to outer shelf environment in connection with a major transgressive to regressive system tract. The rich trilobite fauna consisting of nearly 100 taxa is closely linked to the changes in the environment, being most abundant in a muddy and siliciclastic dominated environment just above storm wave base. The fauna is highly endemic for the region and the remainder of Baltoscania. This monograph presents a taxonomic description of the total trilobite fauna, including a new genus and seven hitherto unknown species. New and extensive biostratigraphical data is presented on the trilobites together with a study on the biogeographical and ecological aspects of the faunas.
Author: Kristina Månsson
Publisher:
ISBN: 9789186746353
Category : Paleontology
Languages : en
Pages : 21
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Book Description
Author: Byron Nelson Cooper
Publisher: Geological Society of America
ISBN: 0813710553
Category : Paleontology
Languages : en
Pages : 98
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Book Description
Forty-five species of lower Middle Ordovician trilobites, including six new genera and thirty new species, are described and illustrated from the extensive collections in the United States National Museum. Most of these species occur in beds whose age and correlation have been a matter of controversy for more than a decade. The stratigraphic evidence afforded by the trilobites lends strong support to regional stratigraphic interpretations of the lower Champlainian beds in the Appalachian Valley, which have been worked out by G. Arthur Cooper and the writer fromdetailed study of brachiopod faunas and from physical stratigraphic studies. The trilobites, like brachiopods, are not so restricted in their facies distribution as are many groups of invertebrate fossils. Hence they are very useful in establishing contemporaneity of dissimilar facies. In this paper only the more common trilobites are described. The principal purpose of this study is to make available for biostratigraphic use a number of trilobite species, most of which have been confused or misidentified previously.
Author: Rolf Ludvigsen
Publisher: Ottawa, Canada : Energy, Mines and Resources Canada
ISBN:
Category : Science
Languages : en
Pages : 112
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Author: Harry Blackmore Whittington
Publisher: Geological Society of America
ISBN: 0813710596
Category : Paleontology
Languages : en
Pages : 183
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Book Description
Author: Alan T. Thomas
Publisher:
ISBN:
Category :
Languages : en
Pages : 25
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Book Description
Author: Thomas Edward Whiteley
Publisher: Comstock Publishing Associates
ISBN:
Category : Nature
Languages : en
Pages : 410
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Book Description
"Trilobites are the most lifelike of fossils--many well-preserved specimens belie their great antiquity and seem almost ready to arch their bodies, peer about with their compound eyes, and crawl forward as if to complete a journey that was interrupted hundreds of millions of years ago."--from the Foreword"New York State is and has long been a magnet for trilobite hunters.... New York's trilobites were among the first illustrated fossils in North America.... Many outstanding localities in New York State, from the majestic Ordovician limestone bluffs of Trenton Falls, to the Silurian beds in the great gorge of Niagara River, to the Devonian shale cliffs of Lake Erie, continue to yield abundant and spectacular trilobite fossils. New York strata have also yielded more trilobites with preserved appendages and other "soft parts" than almost any other region of the world.... Spectacular, ornate trilobites from New York ranging from a few millimeters to nearly a half meter in length, are featured in museums all over the world."--from the PrefaceThis superbly illustrated book reviews the trilobite fossils found throughout New York State, including their biology, methods of taphonomy (preservation of specimens), and the broader Paleozoic geology of the state. A general chapter on the geology of New York State places the importance of these now-extinct invertebrate marine animals into context. Sixty-seven line drawings and 175 black-and-white photographs illustrate individual species, many represented here by type specimens, and display the eerie beauty that has made New York State trilobites favorites of collectors the world over.
Author: Reuben James Ross
Publisher:
ISBN:
Category : Paleontology
Languages : en
Pages : 40
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Book Description
Additional title page description: Species of the trilobites Iostelus, Bathyurus?, Proetidella, Gravicalymene, Flexicalymene, and Acidaspis are described from Middle and Upper Ordovician strata of Kentucky.
Author: Harry Blackmore Whittington
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author: Jonathan M. Adrain
Publisher:
ISBN: 9781869779764
Category : Paleontology
Languages : en
Pages : 97
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Book Description
