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Bryozoa
None
Major Evolutionary Radiations
This unique volume takes a close look at patterns of evolutionary change responsible for the astounding diversity of life and the major radiations seen in many taxonomic groups. Evidence from the fossil record shows that this process has not occurred at an even rate. Rather, relatively short but highly active periods of evolution have yielded the multiplication of species and morphological divergences, such as the emergence of flowering plants during the late Cretaceous. The contributors to this work, all recognized authorities in their fields, discuss general aspects of major radiations, and then focus on evolution in taxonomic groups with ample fossil records. The book is an important complement to the literature of extinction and paleontology, and will be read with interest by paleontologists and evolutionary biologists alike.
Extinction and Survival in the Fossil Record
Mass extinctions of animals and plants in the geological past are a topic of continuing interest and debate. This volume reviews some of the major changes that are seen in important groups of organisms in the fossil record. Our present understanding of the nature and causes of these changes is examined, together with the problems of defining such changes. The available data on a variety of fossil plants and animals are considered in relation to major extinction events that have been recognized in the geological record for Phanerozoic time (i.e. approximately the past 600 million years). The question of whether there is a regular periodicity in extinction events is considered, as are the problems posed by the incompleteness of the paleontological and stratigraphical evidence.
National Union Catalog
Includes entries for maps and atlases.
