Geologic Time 2 Mass Extinctions

Front

Organism type of the Ordovician period?

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Marine

Front

Trilobites existed in the Ordovician period.

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Yes

Front

Percentage of organisms extinct during the Ordovician-Silurian extinction?

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86%

Front

Devonian period:

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Age of the Fish

Front

Great Dying extinction?

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Permian-Trassic

Front

Mass extinction occurs when multiple species globally go extinct suddenly.

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Correct Answer: When multiple species from all over the earth suddenly go extinct.

Front

Largest mass extinction: 96% of species vanished.

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Permian Extinction

Front

Cause of the Permian-Triassic extinction?

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Volcanic Eruption

Front

Triassic-Jurassic extinction led to:

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Dinosaurs ruling the next period.

Front

Cretaceous–Paleogene extinction allowed small mammals to thrive because dinosaurs went extinct.

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Correct Answer: Dinosaurs went extinct.