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Definition
| Beginning of Earth. 1st Era, 1st prokaryotes existed. |
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Definition
| Era where oldest fossils of Eukaryotic cells appear. Diverse algae and invertebrate animals appear. |
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Definition
| Era where fish, vascular plants, simple reptiles, and insects appear. |
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Definition
| Era of reptiles and dinosaurs. Flowering plants develop. Several reptilian fossils found during this Era. |
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Term
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Definition
| Era that includes the Ice age, and the development of humans and other mammals. |
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Term
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Definition
| Period of time when global environmental changes lead to the elimination of of a large number of species throughout Earth. |
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