1. Earth: Geologic Principles and History FIRST EDITIONCHERNICOFF/FOX/TANNER

2. Chapter 21 The Geology of the Paleozoic Era

3. Copyright © by Houghton Mifflin Company. All rights reserved.3 Figure 21.01: Shallow marine sandstone

4. Copyright © by Houghton Mifflin Company. All rights reserved.4 Figure 21.06: Dry climate in the interior of Pangaea

5. Copyright © by Houghton Mifflin Company. All rights reserved.5 Figure 21.07: Taconic Mountains

6. Copyright © by Houghton Mifflin Company. All rights reserved.6 Figure 21.14: The Catskill Formation

7. Copyright © by Houghton Mifflin Company. All rights reserved.7 Figure 21.16: Catskill Mountains

8. Copyright © by Houghton Mifflin Company. All rights reserved.8 Figure 21.17: Deformation during the Allegheny orogeny

9. Copyright © by Houghton Mifflin Company. All rights reserved.9 Figure 21.22: Pennsylvania arkose

10. Copyright © by Houghton Mifflin Company. All rights reserved.10 Figure 21.27: Niagara Falls

11. Copyright © by Houghton Mifflin Company. All rights reserved.11 Figure 21.29: Devonian black shale