Trilobites from Upper Silurian Rocks of the Canadian Arctic Archipelago: Encrinurus (Frammia) and Hemiarges PDF Download
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Author: Thomas E. Bolton
Publisher:
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Category :
Languages : en
Pages :
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Author: Thomas E. Bolton
Publisher:
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Category :
Languages : en
Pages :
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Author: Commission géologique du Canada
Publisher:
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Category :
Languages : en
Pages :
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Author: Thomas E. Bolton
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Category :
Languages : en
Pages :
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Author: Geological Survey of Canada
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Category :
Languages : en
Pages :
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Author: Geological Survey (U.S.)
Publisher:
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Category : Geology
Languages : en
Pages : 758
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Author: Arctic Institute of North America
Publisher:
ISBN:
Category : Arctic regions
Languages : en
Pages : 1736
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Author: Rolf Ludvigsen
Publisher: Royal Ontario Museum, 1990. c1989.
ISBN:
Category : Science
Languages : en
Pages : 364
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Silurian trilobites are described from two contrasting facies in the northern Yukon Territory: basinal sediments of the Road River Formation at Prongs Creek and shallow-water limestones of the Illtyd Range. An Otarion Association from dark grey, argillaceous lime mudstones (Lower Silurian) consists of Kosovopeltis, Otarion (Songkania), Cromus, and Leonaspis. These trilobites are identical to those described by Pousen (1934) from his Cape Schuchert Formation of North Greenland. A Stenopareia Association from off-white biosparites (Lower Silurian) includes Stenopareia, a bumastine, Kosovopeltis, and Scotoharpes. A Hedstroemia Association occurs in an Upper Silurian debris flow. It includes Hedstoemia, Prantlia, Balizoma, and Paracybantyx. An incomplete ontogeny of Kosovopeltis borealis (Poulsen) comprises a protaspis and four different transitory pygidia. The bumastine genus Paracybantyx is new. New species are Paracybantyx asulcatus, Stenopareia illtyd, Hedstroemia kutchini, H. sourdoughi, and Prantlia vagrans.
Author:
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ISBN:
Category : Geology
Languages : en
Pages : 374
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Author:
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ISBN:
Category : Geology
Languages : en
Pages : 1306
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Author: B. S. Norford
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 86
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