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Zonation and Correlation of Middle Boreal Bathonian to Lower Callovian (Jurassic) Ammonites, Salmon Cache Canyon, Porcupine River, Northern Yukon
T. P. PoultonGeological Survey of Canada
出版Geological Survey of Canada, 1987
主題Science / Paleontology
ISBN06601251299780660125121
URLhttp://books.google.com.hk/books?id=PkWPZy2IA-8C&hl=&source=gbs_api
註釋Ammonites were recognized to be among the finest tools for correlation of Mesozoic rocks and served as the inspiration for many current ideas on fossil species concepts, on the style and rate of evolution, and on paleobiogeographic provincialism. This study describes the ammonites from a single, richly fossiliferous, and well exposed locality in northern Yukon where a succession of 7 faunas is present. A new zonation for northwestern Canada is proposed based on this succession. The ammonites are mainly Boreal, and correlations of each zone with the published successions across the Arctic are discussed. Eight new species and one new genus are described.