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Travel through Earth's history to learn about the Oligocene time period, which is characterized by the appearance of most of the living families of mammals.
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appearance modern mammal, diversification of ungulate, evolution of life, fossil evidence, geologic time, prehistoric climate change, two whale order, woodlands gave way grassland, earth history, national museum of natural history: geologic time: the oligocene, oligocene time period, smithsonian, smithsonian institute, fossil record, cenozoic era
Classroom Considerations
- Knovation Readability Score: 3 (1 low difficulty, 5 high difficulty)
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