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Klappentext 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. Zusammenfassung Focuses on the 46-million-year Ordovician Period (489-443 my)! when 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 colonized terrestrial areas with damp environments. Inhaltsverzeichnis Scaling Of Ordovician Time! And Measures For Assessing Biodiversity ChangeIntroduction! by Barry D. Webby and Florentin ParisConspectus Of The Ordovician WorldStratigraphic Framework and Time Slices! by Barry D. Webby! Roger A. Cooper! Stig M. Bergstr^m and Florentin ParisTaxonomic GroupsCalibration of the Ordovician Time Scale! by Peter M. Sadler and Roger A. CooperAspects Of The Ordovician RadiationMeasures of Biodiversity! by Roger A. CooperMajor Terranes in the Ordovician! by L. Robin M. Cocks and Trond H. TorsvikIsotopic Signatures! by Graham A. Shields and J·n VeizerOrdovician Oceans and Climate! by Christopher R. BarnesWas there an Ordovician Superplume Event?! by Christopher R. BarnesEnd-Ordovician Glaciation! by Patrick J. BrenchleySea-level Changes - a Baltoscandian Perspective! by Arne Thorsh¯j NielsonRadiolarians! by Paula J. Noble and Taniel DanelianSponges! by Marcelo Carrera and J. Keith RigbyStromatoporoids! by Barry D. WebbyConulariids! by Heyo Van Iten and Zdenka Brabcov·Corals! by Barry D. Webby! Robert J. Elias! Graham A. Young! Bj^rn E.E. Neuman and Dimitri Bryozoans! by Paul D Taylor and Andrej ErnstBrachiopods! by David A.T. Harper! L. Robin M. Cocks! Leonid E. Popov! Peter M. Sheehan! MichaelPolyplacophoran and Symmetrical Univalve Molluscs! by Lesley Cherns! David M. Rohr and JirÌ FrydaGastropods! by JirÌ Fryda and David M. RohrRostroconch and Bivalve Molluscs! by John C.W. CopeNautiloid Cephalopods! by Robert C. Frey! Matilde S. Beresi! David H. Evans! Alan H. King and Ian G. PerciTube-Shaped Incertae Sedis! by John M. Malinky! Mark A. Wilson! Lars E. Holmer and Hubert LardeuxWorms! Worm-like and Sclerite-bearing Taxa! by Olle Hints! Mats Eriksson! Anette E.S. H^gstr^m! Petr Kraft and Oliver LehnertTrilobites! by Jonathan M. Adrain! Gregory D. Edgecombe! Richard A. Fortey! ÿyvind Hammer! JohnEurypterids! Phyllocarids and Ostracodes! by Simon J. Braddy! Victor P. Tollerton Jr.! Patrick Racheboeuff! and Roger SchallrAsterozoan! Echinozoan! Blastozoan! Crinozoan and Homalozoan Echinoderms! by James Sprinkle and Thomas E. GuensburgGraptolites: Patterns of Diversity across Paleolatitudes! by Roger ...
