Author: William B. N. Berry
Publisher: Geological Society of America
Published: 1970
Total Pages: 311
ISBN-13: 0813721024
DOWNLOAD EBOOK →Author: Jisuo Jin
Publisher: NRC Research Press
Published: 2008
Total Pages: 164
ISBN-13: 0660197898
DOWNLOAD EBOOK →A monographic study that deals with a major marine faunal turnover during the Late Ordovician global greenhouse/icehouse episodes. It aims to document the diversity change of brachiopods (one of the major groups of marine life during the Ordovician Period) from pre-extinction to extinction times.
Author: Barry D. Webby
Publisher: Columbia University Press
Published: 2004-04-14
Total Pages: 497
ISBN-13: 0231501633
DOWNLOAD EBOOK →Two of the greatest evolutionary events in the history of life on Earth occurred during Early Paleozoic time. The first was the Cambrian explosion of skeletonized marine animals about 540 million years ago. The second was the "Great Ordovician Biodiversification Event," which is the focus of this book. During the 46-million-year Ordovician Period (489–443 m.y.), a bewildering array of adaptive radiations of "Paleozoic- and Modern-type" biotas appeared in marine habitats, the first animals (arthropods) walked on land, and the first non-vascular bryophyte-like plants (based on their cryptospore record) colonized terrestrial areas with damp environments. This book represents a compilation by a large team of Ordovician specialists from around the world, who have enthusiastically cooperated to produce this first globally orientated, internationally sponsored IGCP (International Geological Correlation Program) project on Ordovician biotas. The major part is an assembly of genus- and species-level diversity data for the many Ordovician fossil groups. The book also presents an evaluation of how each group diversified through Ordovician time, with assessments of patterns of change and rates of origination and extinction. As such, it will become the standard work and data source for biotic studies on the Ordovician Period.
Author: Geological Society of America
Publisher:
Published: 1970
Total Pages: 337
ISBN-13: 9780598112118
DOWNLOAD EBOOK →Author: B. S. Norford
Publisher:
Published: 1985
Total Pages: 172
ISBN-13:
DOWNLOAD EBOOK →This report describes the regional geology of the area and details graptolite biostratigraphy, and conodont biostratigraphy of the shale chart unit, orange weathering mudstone unit and lower earn group. A summary, taxonomic notes and references are included.
Author: John A. Talent
Publisher:
Published: 1975
Total Pages: 138
ISBN-13: 9780608151847
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