408 pages, 140 illus
During the 46 million year Ordovician Period (489-443 m.y.a), a remarkable array of adaptive radiations of "Paleozoic - and Modern-type" biotas appeared in marine habitats, the first animals (arthropods) walked on land, and the first nonvascular bryophyte-like plants colonized the land. This is the first book devoted specifically to establishing the global patterns of differentiation of Ordovician biotas through time and space. It provides extensive genus- and species-level diversity data for the many Ordovician fossil groups and presents an evaluation of how each group diversified, with assessments of patterns of diversity change, and rates of origination and extinction.
Webby and his dedicated cohorts are to be congratulated for producing this admirable and insightful stockade...The book stands as an indespensible reference...and will likely remain so for years to come. -- Geoffrey Playford, American Association of Stratigraphic Polynologists "Webby and his dedicated cohorts are to be congratulated for producing this admirable and insightful stocktake...The book stands as an indispensable reference." -- Geoffrey Playford, American Association of Stratigraphic Polynologists Newsletter "I would recommend it to anyone who seeks a deeper insight into the events that shaped the earliest truly diverse animal communities hosted by our planet." -- Lynne M. Clos, Bone Bug Journal "The book is well produced and will provide a valuable source... as it should, considering the expertise of the contributors. It should be on the shelves of all geological libraries." -- Adrian Rushton, Geological Magazine "An excellent summary of the Ordovician as we know it." -- Stephen K. Donovan
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