Major Events in Earth's History

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Geologic Time Scale Noun

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[jee-uh-loj-ik tahym skeyl]

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Rock Strata Noun

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[rok strah-tuh]

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Law of Superposition Noun

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[law uv soo-per-puh-zish-uhn]

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Index Fossil Noun

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[in-deks fos-uhl]

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Mass Extinction Noun

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[mas ik-stingk-shuhn]

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Pangaea Noun

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[pan-jee-uh]

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Invertebrate Noun

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[in-vur-tuh-brit]

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Vertebrate Noun

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[vur-tuh-brit]

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Amphibian Noun

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[am-fib-ee-uhn]

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Reptile Noun

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[rep-tahyl]

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