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8 Cards in this Set
- Front
- Back
Which modern land areas were affected by the Permian ice age?
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South America, Australia, Africa, India.
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Compare Silurian life to that of the Ordovician.
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similar, but more corals and echinoderms; first coral reefs.
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Why are trilobites important to Precambrian time?
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index fossils
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Why is the Devonian called the Age of Fishes?
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fish dominated the seas.
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Identify and describe the two groups of organisms that were important during Mississippian time.
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crinoids, related to starfish; foraminifera, one celled animals that build shells.
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What is the basic difference between Cambrian and Ordovician life?
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many more kinds of animals in Ordovician.
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List some groups that died out at the close of the Paleozoic.
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trilobites, eurypterids.
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What is the most important difference between Precambrian rocks and Paleozoic rocks?
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Abundance of fossils in Paleozoic rocks.
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