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Academic & Professional Books  Palaeontology  Palaeontology: General

Ludlow and Pridoli (Upper Silurian) Graptolites from the Arctic Islands, Canada

By: Alfred Lenz and Anna Kozlowska-Dawidziuk
141 pages, Black and white photos and illustrations
Ludlow and Pridoli (Upper Silurian) Graptolites from the Arctic Islands, Canada
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  • Ludlow and Pridoli (Upper Silurian) Graptolites from the Arctic Islands, Canada ISBN: 9780660193267 Paperback Dec 2004 In stock
    £34.99
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About this book

Graptolites flourished from earliest Ordovician to Early Devonian, a time range of about 90 million years, and were widely distributed as marine benthic and planktonic colonial organisms around then-world. They were diverse and rapidly evolving and, as such, make excellent "index fossils" for relative age-dating of their enclosing basinal rocks. Rarely, however, graptolites are beautifully preserved in their original three-dimensional form, and can be extracted from the enclosing rock for detailed study under scanning electron microscope. Such a unique preservation is pervasive in the latest Ordovician to latest Silurian rocks of the central Arctic Islands of Canada, presenting an opportunity to study their complex morphology and evolution, making the Arctic graptolite sequence unique in the world. The present study examines the isolated, uncompressed as well as flattened forms from the Ludlow and Pridoli (Upper Silurian) graptolites of the Arctic, recognizing 46 species of monograptids and retiolitids of which seven are described as new species or subspecies.

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By: Alfred Lenz and Anna Kozlowska-Dawidziuk
141 pages, Black and white photos and illustrations
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