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Neoproterozoic Geobiology and Paleobiology

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This volume presents a sample of views and visions among some of the growing numbers of Neoproterozoic workers. It includes a set ... Weiterlesen
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Beschreibung

This volume presents a sample of views and visions among some of the growing numbers of Neoproterozoic workers. It includes a set of multidisciplinary reviews on the Neoproterozoic fossil record, evolutionary developmental biology of animals, and molecular clock estimates of phylogenetic divergences. These topics are of continuing interest to geoscientists and bioscientists who are intrigued by the deep history of the Earth and its inhabitants.



Klappentext

The Neoproterozoic Era (1000-542 million years ago) has become a major focus of geobiological investigations because it is a geological period characterized by dramatic climatic change and important evolutionary innovations. Repeated glaciations of unusual magnitude occurred throughout this tumultuous interval, and various eukaryotic clades independently achieved multicellularity, becoming more complex, abundant, and diverse at its termination. Animals made their first debut in the Neoproterozoic too. This volume presents a sample of views and visions among some of the growing numbers of Neoproterozoic workers. It includes a set of multidisciplinary reviews on the Neoproterozoic fossil record (animals, algae, acritarchs, protists, and trace fossils), evolutionary developmental biology of animals, molecular clock estimates of phylogenetic divergences, and Neoproterozoic chemostratigraphy and sedimentary geology. These topics are of continuing interest to geoscientists and bioscientists who are intrigued by the deep history of the Earth and its inhabitants. TOC:1: The Proterozoic Fossil Record of Heterotrophic Eukaryotes.- 2: On the Morphological History of Proterozoic and Cambrian Acritarchs.- 3: On the Morphological and Ecological History of Proterozoic Macroalgae.- 4: Evolutionary Paleoecology of Ediacaran Benthic Marine Animals.- 5: A Critical Look at the Ediacaran Trace Fossil Record.- 6: The Developmental Origins of Animal Bodyplans.- 7: Molecular Timescale of Evolution in the Proterozoic.- 8: A Neoproterozoic Chronology.- 9: On Neoproterozoic Cap Carbonates as Chronostratigraphic Markers.



Zusammenfassung
The Neoproterozoic Era (1000542 million years ago) is a geological period of dramatic climatic change and important evolutionary innovations. Repeated glaciations of unusual magnitude occurred throughout this tumultuous interval, and various eukaryotic clades independently achieved multicellularity, becoming more complex, abundant, and diverse at its termination. Animals made their first debut in the Neoproterozoic too. The intricate interaction among these geological and biological events is a centrepiece of Earth system history, and has been the focus of geobiological investigations in recent decades. The purpose of this volume is to present a sample of views and visions among some of the growing numbers of Neoproterozoic workers. The contributions represent a cross section of recent insights into the field of Neoproterozoic geobiology. Chapter One by Porter gives an up-- date review of Proterozoic heterotrophic eukaryotes, including fungi and various protists. Heterotrophs are key players in Phanerozoic ecosystems; indeed, most Phanerozoic paleontologists work on fossil heterotrophs. However, the fossil record of Proterozoic heterotrophs is extremely meagre.

Inhalt
Chapter 1: The Proterozoic Fossil Record of Heterotrophic Eukaryotes Sussannah M. Porter 1. Introduction 2. Eukaryotic Tree 3. Fossil Evidence for Proterozoic Heterotrophs 4. Why Are Heterotrophs Rare in Proterozoic Rocks? 5. Conclusions Chapter 2: On the Morphological History of Proterozoic and Cambrian Acritarchs John Warren Huntley, Shuhai Xiao, and Michael Kowalewski 1. Introduction 2. Materials and Methods 3. Results 4. Discussion 5. Conclusions Acknowledgments References Appendix: SAS/IML Codes Chapter 3: On the Morphological and Ecological History of Proterozoic Macroalgae Shuhai Xiao and Lin Dong 1. Introduction 2. A Synopsis of Proterozoic Macroalgal fossils 3. Morphological History of Proterozoic Macroalgae 4. Discussion 5. Conclusions Acknowledgments References Chapter 4: Evolutionary Paleoecology of Ediacaran Benthic Marine Animals David J. Bottjer and Matthew E. Clapham 1. Introduction 2. A Mat-Based World 3. Nature of the Data 4. Evolutionary Paleoecology 5. Discussion Acknowledgements References Chapter 5: A Critical Look at the Ediacaran Trace Fossil Record Sören Jensen, Mary L. Droser and James G. Gehling 1. Introduction 2. Problems in the Interpretation of Ediacaran Trace Fossils 3. List of Ediacaran Trace Fossils 4. Discussion Acknowledgments References Chapter 6: The Developmental Origins of Animal Bodyplans Douglas H. Erwin 1. Introduction 2. Pre-Bilaterian Developmental Evolution 3.Development of the Urbilateria 4. Constructing Ancestors 5. Conclusions Acknowledgments References Chapter 7: Molecular Timescale of Evolution in the Proterozoic S. Blair Hedges, Fabia U. Battistuzzi, Jaime E. Blair 1. Introduction 2. Molecular Clock Methods 3. Molecular Timescales 4. Astrobiological Implications 5. Conclusions Acknowledgments References Chapter 8: A Neoproterozoic Chronology Galen P. Halverson 1. Introduction 2. Constructing the Record 3. Review of the Neoproterozoic 4. Conclusions Acknowledgments References Chapter 9: On Neoproterozoic Cap Carbonates as Chronostratigraphic Markers Frank A. Corsetti and Nathaniel J. Lorentz 1. Introduction 2. Key Neoproterozoic Successions 3. Discussion 4. Conclusion References

Produktinformationen

Titel: Neoproterozoic Geobiology and Paleobiology
EAN: 9781402052026
ISBN: 978-1-4020-5202-6
Digitaler Kopierschutz: Wasserzeichen
Format: E-Book (pdf)
Herausgeber: Springer
Genre: Geologie
Anzahl Seiten: 300
Veröffentlichung: 31.05.2007
Jahr: 2007
Untertitel: Englisch
Dateigrösse: 22.5 MB

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