The great Ordovician biodiversification event / edited by Barry D. Webby [and three others].

Enhanced descriptions from Syndetics:

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.

Table of contents provided by Syndetics

• Introduction
• Conspectus Of The Ordovician World Stratigraphic Framework and Time Slices
• Taxonomic Groups Calibration of the Ordovician Time Scale
• Aspects Of The Ordovician Radiation Measures of Biodiversity
• Major Terranes in the Ordovician
• Isotopic Signatures
• Ordovician Oceans and Climate
• Barnes Was there an Ordovician Superplume Event?
• End-Ordovician Glaciation
• Sea-level Changes - a Baltoscandian Perspective
• Nielson Radiolarians
• Sponges
• Stromatoporoids
• Conulariids
• Corals
• Bryozoans
• Brachiopods
• Polyplacophoran and Symmetrical Univalve Molluscs
• Gastropods
• Rostroconch and Bivalve Molluscs
• Nautiloid Cephalopods
• Tube-Shaped Incertae Sedis
• Worms, Worm-like and Sclerite-bearing Taxa
• Trilobites
• Eurypterids, Phyllocarids and Ostracodes
• Asterozoan, Echinozoan, Blastozoan, Crinozoan and Homalozoan Echinoderms
• Graptolites: Patterns of Diversity across Paleolatitudes
• Chitinozoans
• Conodonts: Lower-Middle Ordovician Record
• Vertebrates (Agnathans and Gnathostomes)
• Nowlan, Receptaculitids and Algae
• Acritarchs
• Miospores and the Emergence of Land Plants
• The Ichnologic Record of the Ordovician Radiation
• The Ordovician Radiation: Towards a New Global Synthesis