3. Calibration of the Ordovician Timescale

Chapters in this book

1. Frontmatter i
2. Contents vii
3. Acknowledgments ix
4. 1. Introduction 1
5. Part I. Scaling of Ordovician Time and Measures for Assessing Biodiversity Change
6. 2. Stratigraphic Framework and Time Slices 41
7. 3. Calibration of the Ordovician Timescale 48
8. 4. Measures of Diversity 52
9. Part III. Conspectus of the Ordovician World
10. 5. Major Terranes in the Ordovician 61
11. 6. Isotopic Signatures 68
12. 7. Ordovician Oceans and Climate 72
13. 8. Was There an Ordovician Superplume Event? 77
14. 9. End Ordovician Glaciation 81
15. 10. Ordovician Sea Level Changes: A Baltoscandian Perspective 84
16. Par IV. Taxonomic Groups
17. 11. Radiolarians 97
18. 12. Sponges 102
19. 13. Stromatoporoids 112
20. 14. Conulariids 119
21. 15. Corals 124
22. 16. Bryozoans 147
23. 17. Brachiopods 157
24. 18. Polyplacophoran and Symmetrical Univalve Mollusks 179
25. 19. Gastropods 184
26. 20. Bivalve and Rostroconch Mollusks 196
27. 21. Nautiloid Cephalopods 209
28. 22. Tube-Shaped Incertae Sedis 214
29. 23. Worms, Wormlike and Sclerite-Bearing Taxa 223
30. 24. Trilobites 231
31. 25. Eurypterids, Phyllocarids, and Ostracodes 255
32. 26. Crinozoan, Blastozoan, Echinozoan, Asterozoan, and Homalozoan Echinoderms 266
33. 27. Graptolites: Patterns of Diversity Across Paleolatitudes 281
34. 28. Chitinozoans 294
35. 29. Conodonts: Lower to Middle Ordovician Record 312
36. 30. Vertebrates (Agnathans and Gnathostomes) 327
37. 31. Receptaculitids and Algae 336
38. 32. Acritarchs 348
39. 33. Miospores and the Emergence of Land Plants 361
40. Part. IV. Aspects of the Ordovician Radiation
41. 34. The Ichnologic Record of the Ordovician Radiation 369
42. 35. The Ordovician Radiation: Toward a New Global Synthesis 380
43. List of Figures and Tables 389
44. References 395
45. List of Contributors 467
46. Index 473