Conceptual Physical Science Explorations
2nd Edition
ISBN: 9780321567918
Author: Paul G. Hewitt, Leslie A. Hewitt, John A Suchocki
Publisher: Addison Wesley
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Chapter 29, Problem 10TE
To determine
The life forms associated with the Devonian period.
Expert Solution & Answer
Answer to Problem 10TE
The life forms associated with the Devonian period are mainly fishes like lobe-finned fishes with evolved nostrils.
Explanation of Solution
During the Devonian period, the continents of North America, Europe, and Siberia merged to form a supercontinent known as Laurasia, which was located near the Equator. The climate during this period was generally warm and moist. Plant and lowland forests of trees flourished. In the seas, many groups of fishes diversified. This is the reason the Devonian period is known as “the age of the fishes,” and the major forms of life forms during those times were fishes, sharks, and bony fishes. Special kinds of fishes like lobe-finned fishes, some with internal nostrils, developed during the Devonian period, which gave way to land-living vertebrates. The other life forms which were active during the Devonian period were plants, trees, and ferns.
Conclusion:
Therefore, the life forms associated with the Devonian period are mainly fishes like lobe-finned fishes with evolved nostrils.
Chapter 29 Solutions
Conceptual Physical Science Explorations
Ch. 29 - Prob. 1RQCh. 29 - A granitic dike is found across a sandstone layer....Ch. 29 - How are fossils used in determining geologic time?Ch. 29 - In a sequence of sedimentary rock layers, the...Ch. 29 - What is radioactive half-life?Ch. 29 - What are the half-lives of uranium-238,...Ch. 29 - Which of the geologic time units spans the...Ch. 29 - Prob. 8RQCh. 29 - Prob. 9RQCh. 29 - Prob. 10RQ
Ch. 29 - Prob. 11RQCh. 29 - Why are the lobe-finned fishes significant?Ch. 29 - Prob. 13RQCh. 29 - What animals group evolved from the amphibians...Ch. 29 - Prob. 15RQCh. 29 - Prob. 16RQCh. 29 - What evidence supports the meteorite impact at the...Ch. 29 - Which epochs make up the tertiary period? The...Ch. 29 - Prob. 19RQCh. 29 - Prob. 20RQCh. 29 - What six principles are used in relative dating?Ch. 29 - Why dont all rock formations show a continuous...Ch. 29 - Prob. 3TECh. 29 - Prob. 4TECh. 29 - Prob. 5TECh. 29 - What was the most noteworthy evidence of life in...Ch. 29 - Prob. 7TECh. 29 - Why are internal nostrils in the lobe-finned...Ch. 29 - What time period is associated with coal deposits?Ch. 29 - Prob. 10TECh. 29 - Prob. 11TECh. 29 - How does the element iridium relate to the time of...Ch. 29 - Suppose you see a sequence of sedimentary rock...Ch. 29 - If a sedimentary rock contains inclusions of...Ch. 29 - Which isotopes are most appropriate for dating...Ch. 29 - Before the discovery of radioactivity, how did...Ch. 29 - Prob. 17TECh. 29 - Prob. 18TECh. 29 - Prob. 19TECh. 29 - Prob. 20TECh. 29 - The principle of superposition is that each new...Ch. 29 - Life forms throughout Earths past have occurred in...Ch. 29 - The time it takes for 50 of a radioactive...Ch. 29 - Development of Earths ocean was likely due to (a)...Ch. 29 - Prob. 5RATCh. 29 - Prob. 6RATCh. 29 - Prob. 7RATCh. 29 - The formation of the supercontinent Pangaea (a)...Ch. 29 - Prob. 9RATCh. 29 - Prob. 10RAT
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