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notes:history [2026/06/12 03:55] 169.224.17.175 old revision restored (2026/06/05 01:14) |
notes:history [2026/06/13 11:54] (current) 114.119.145.205 old revision restored (2008/11/18 00:58) |
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| * 3.8 bya - first life on Earth | * 3.8 bya - first life on Earth | ||
| * 3.5 bya - photosynthesis starts | * 3.5 bya - photosynthesis starts | ||
| + | * 3.3 bya - 2.8 bya - Vaalbara supercontinent exists | ||
| * Proterozoic Eon : 2.5 bya - 550 mya | * Proterozoic Eon : 2.5 bya - 550 mya | ||
| * 2.4 bya - oxygen becomes significant component of the atmosphere | * 2.4 bya - oxygen becomes significant component of the atmosphere | ||
| - | * 1 bya - multicellular plants (algae) and animals | + | * 1.8 - 1.5 bya - Columbia Supercontinent |
| * 1 bya - 800 mya - Rodinia supercontinent exists | * 1 bya - 800 mya - Rodinia supercontinent exists | ||
| * 770 - 750 mya - first ice age | * 770 - 750 mya - first ice age | ||
| - | * before | + | * before |
| * Paleozoic (Primary) Era : 550 - 250 mya | * Paleozoic (Primary) Era : 550 - 250 mya | ||
| * Cambrian - small shelled animals, corals | * Cambrian - small shelled animals, corals | ||
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| * Silurian - land plants, ferns, sharks, fish | * Silurian - land plants, ferns, sharks, fish | ||
| * Devonian - first tetrapods - evolution of fish onto land | * Devonian - first tetrapods - evolution of fish onto land | ||
| - | * Carboniferous - reptiles, amphibians, spiders, | + | * Carboniferous - reptiles, amphibians, spiders, |
| * Permian - more synapsids (mammal-like reptiles) | * Permian - more synapsids (mammal-like reptiles) | ||
| * 300 mya - 250 mya - last supercontinent Pangaea exists | * 300 mya - 250 mya - last supercontinent Pangaea exists | ||