G4 Lesson 5 What can fossils tell us?

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2. 1. Recall- What did paleontologists conclude about sauropods by studying their skulls and teeth?

• Paleontologists concluded that the dinosaurs may have swallowed their food without chewing it.

• Paleontologists concluded that the dinosaurs may have eaten their food by chewing it.

2. PAGE 208

3. 2. Compare- Tell how the horsetail fossil and the modern horsetail plant are alike. (In terms of structures/ plant parts; what do they have in common,? give their similarities, how are they the same?)

• Both have large branches that grow off the stem in a circular pattern.

• Both have tiny branches that grow off the stem in a circular pattern.

3. PAGE 208

4. 3. Hypothesize: What is another possible use of the hadrosaur's hollow crest?

• It may have been used like a horn to warn other hadrosaurs of danger.

• It may have been used like a horn to catch food for their offsprings.

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4. 4. Describe: How has the environment of Kansas changed?

5. Fill in the blank: A (a)   once covered land that is now Kansas.

Answer explanation

sea

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5. 5. Main Idea and Details: What details support the idea that Earth's environment has changed?

6. Fill in the blank: "Scientists have found (a)   of giant sea turtles and ammonites in land areas that are now dry.

Answer explanation

fossils

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Geologic Time Scale: shows the history of the Earth.

QUESTION: In what era, wherein in the last 65 million years, dogs, cats, and humans appeared.

• Cenozoic Era

• Mesozoic era

• Paleozoic Era

• Precambrian

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Geologic Time Scale: shows the history of the Earth.

QUESTION: In what era, wherein also called the Age of the Dinosaurs, was the time of hadrosaurs and Tyrannosaurus rex. Most dinosaurs became extinct at the end of this period.

• Cenozoic era

• Mesozoic era

• Paleozoic era

• Precambrian

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Geologic Time Scale: shows the history of the Earth.

QUESTION: In what era, wherein fish, simple plants, insects and early land animals lived during this time.

• Cenozoic era

• Mesozoic era

• Paleozoic era

• Precambrian

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Geologic Time Scale: shows the history of the Earth.

QUESTION: In what era, wherein some rocks from the late precambrian time have fossils of jellyfish.

• Cenozoic era

• Mesozoic era

• Paleozoic era

• Precambrian

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6. 6. INFER: What era are the sea turtle fossils of South Dakota from?

• Cenozoic era

• Mesozoic era

• Paleozoic era

• Precambrian