To predict : Whether the geographical distribution of fossils of early dinosaurs originated 200-250 million years ago would be broad or narrow. Concept introduction : Dinosaurs originated when there was a single large landmass in the Earth, called Pangea.

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Chapter 22.3, Problem 3CC

Summary Introduction

To predict: Whether the geographical distribution of fossils of early dinosaurs originated 200-250 million years ago would be broad or narrow.

Concept introduction:

Dinosaurs originated when there was a single large landmass in the Earth, called Pangea.

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Carbon-14 dating works for fossils up to about 75,000 years old;fossils older than that contain too little 14C to be detected. Mostdinosaurs went extinct 65.5 million years ago. (a) Can 14C be usedto date dinosaur bones? Explain. (b) Radioactive uranium-235 hasa half-life of 704 million years. If it was incorporated into dinosaurbones, could it be used to date the dinosaur fossils? Explain

A number of scientists believe that the Permian extinction was caused by huge volcanic lava flows (from the Siberian traps) that may have caused low oxygen concentrations compared to the high oxygen levels in the Permian. Does this low oxygen level after the Permian extinction make it likely that dinosaurs, especially large ones, did not evolve immediately after the Permian extinction (252 million years ago)? Why or why not?

WHAT IF? Fossils show that dinosaurs originated200–250 million years ago. Would you expect the geographic distribution of early dinosaur fossils to be broad(on many continents) or narrow (on one or a few continents only)? Explain.

Answer 2

Question

Chapter 22.3, Problem 3CC

Summary Introduction

To predict: Whether the geographical distribution of fossils of early dinosaurs originated 200-250 million years ago would be broad or narrow.

Concept introduction:

Dinosaurs originated when there was a single large landmass in the Earth, called Pangea.

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Answer 3

Question

Chapter 22.3, Problem 3CC

Summary Introduction

To predict: Whether the geographical distribution of fossils of early dinosaurs originated 200-250 million years ago would be broad or narrow.

Concept introduction:

Dinosaurs originated when there was a single large landmass in the Earth, called Pangea.

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Answer 4

Question

Chapter 22.3, Problem 3CC

Summary Introduction

To predict: Whether the geographical distribution of fossils of early dinosaurs originated 200-250 million years ago would be broad or narrow.

Concept introduction:

Dinosaurs originated when there was a single large landmass in the Earth, called Pangea.

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Answer 5

Chapter 22.3, Problem 3CC

Summary Introduction

To predict: Whether the geographical distribution of fossils of early dinosaurs originated 200-250 million years ago would be broad or narrow.

Concept introduction:

Dinosaurs originated when there was a single large landmass in the Earth, called Pangea.

Answer 6

Chapter 22.3, Problem 3CC

Summary Introduction

To predict: Whether the geographical distribution of fossils of early dinosaurs originated 200-250 million years ago would be broad or narrow.

Concept introduction:

Dinosaurs originated when there was a single large landmass in the Earth, called Pangea.

Answer 7

Chapter 22.3, Problem 3CC

Summary Introduction

To predict: Whether the geographical distribution of fossils of early dinosaurs originated 200-250 million years ago would be broad or narrow.

Concept introduction:

Dinosaurs originated when there was a single large landmass in the Earth, called Pangea.

Answer 8

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Answer 11

Ch. 22.1 - How did Hutton's and Lyell's ideas influence...Ch. 22.1 - MAKE CONNECTIONS Scientific hypotheses must be...Ch. 22.2 - How does the concept of descent with modification...Ch. 22.2 - WHAT IF? If you discovered a fossil of an extinct...Ch. 22.2 - MAKE CONNECTIONS Review the relationship between...Ch. 22.3 - Explain how the following Statement is inaccurate:...Ch. 22.3 - How does evolution account for (a) the similar...Ch. 22.3 - Prob. 3CC Ch. 22 - Why was the age of Barth important for Darwin's...Ch. 22 - Describe how overreproduction and heritable...

To predict : Whether the geographical distribution of fossils of early dinosaurs originated 200-250 million years ago would be broad or narrow. Concept introduction : Dinosaurs originated when there was a single large landmass in the Earth, called Pangea.

Solution Summary: The author explains that biogeographic distribution is an important evidence for evolution, which is influenced by various factors.

Concept explainers

Videos

To predict: Whether the geographical distribution of fossils of early dinosaurs originated 200-250 million years ago would be broad or narrow.

Concept introduction:

Dinosaurs originated when there was a single large landmass in the Earth, called Pangea.

Want to see the full answer?

Chapter 22 Solutions

To predict : Whether the geographical distribution of fossils of early dinosaurs originated 200-250 million years ago would be broad or narrow. Concept introduction : Dinosaurs originated when there was a single large landmass in the Earth, called Pangea.

Solution Summary: The author explains that biogeographic distribution is an important evidence for evolution, which is influenced by various factors.

Concept explainers

Videos

To predict: Whether the geographical distribution of fossils of early dinosaurs originated 200-250 million years ago would be broad or narrow. Concept introduction: Dinosaurs originated when there was a single large landmass in the Earth, called Pangea.

Want to see the full answer?

Chapter 22 Solutions

To predict: Whether the geographical distribution of fossils of early dinosaurs originated 200-250 million years ago would be broad or narrow.

Concept introduction:

Dinosaurs originated when there was a single large landmass in the Earth, called Pangea.