CD/Web Review Questions

Chapter 14, The Middle Paleozoic World

  1. What factors allowed the renewed adaptive radiation of marine life in the Silurian Period? Hint

  2. By the Late Silurian, Laurentia, Siberia, and Gondwanaland were moving in what direction? Hint

  3. When did jawed fishes, insects, and ammonoids first appear? Hint

  4. Numerous Devonian glacial deposits are found on what modern continent? Hint

  5. The Silurian Period is divided into four epochs; what is the youngest epoch? Hint

  6. Each Silurian epoch is distinguished from the others by the appearance of new species of ______________. Hint

  7. During Silurian time, where were the modern Philippine Islands located? Hint

  8. Much of North America was covered by shallow seas during the Silurian. True or false? Hint

  9. The global distribution of Silurian reefs is related to the _____________ control of climate. Hint

  10. Reefs died in the Great Lakes region near the end of the Silurian because of local environmental changes. What were these changes? Hint

  11. What two major animal groups colonized the land during Devonian time? Hint

  12. When did ferns evolve? Hint

  13. What is the earliest well-preserved terrestrial ecosystem? Hint

  14. In what kind of climate were the Rhynie Chert beds formed? Hint

  15. How many fossil species have been discovered in beds of a large Devonian reef exposed at the Falls of the Ohio? Hint

  16. What kind of reef is the one exposed at the Falls of the Ohio? Hint

  17. What fossil animal, 360 million years old, is the most primitive tetrapod yet found, aside from creatures suggested by a few older fossil fragments? Hint

  18. What significance did discovery of this and other early tetrapod fossils have for the prevailing theory of how aquatic animals evolved into land animals? Hint

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