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Periods of Time
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Cambrian: 540 to 500 MYA
When life first started; Explosion of life.
When life first started; Explosion of life.
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Ordovician: 505 to 438 MYA
Life continues to advance, arthropods and cephalopods rule the oceans.
Life continues to advance, arthropods and cephalopods rule the oceans.
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Silurian: 438 to 408 MYA
Jawed and bony fish appear and flourish in the oceans. Also the appearance of plants on land.
Jawed and bony fish appear and flourish in the oceans. Also the appearance of plants on land.
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Devonian: 408 to 360 MYA
Certain fish evolve limbs and start to live on land.
Certain fish evolve limbs and start to live on land.
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Carboniferous: 360 to 280 MYA
Amphibians are the dominant species on land. Plants have evolved into large forests. Insects increase vastly in size and variety.
Amphibians are the dominant species on land. Plants have evolved into large forests. Insects increase vastly in size and variety.
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Permian: 280 to 245 MYA
The large expansive forests disappear and the largest extinction event in earth's history occurs at the end of the Permian Period. 90% of all life on the planet went extinct.
The large expansive forests disappear and the largest extinction event in earth's history occurs at the end of the Permian Period. 90% of all life on the planet went extinct.
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Triassic: 245 to 208 MYA
Life regains a foothold on land and water, and the rulers of earth for the next 180 million years appear; Dinosaurs.
Life regains a foothold on land and water, and the rulers of earth for the next 180 million years appear; Dinosaurs.
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Jurassic: 208 to 146 MYA
The largest of dinosaurs appear including species like Brachiosaurus and Supersaurus.
The largest of dinosaurs appear including species like Brachiosaurus and Supersaurus.
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Cretaceous: 146 to 65 MYA
The largest non-avian theropods evolve including the Tyrannosaurs and the Carcharodontosaurs. One of the biggest mass extinctions occurs at 65 MYA and wipes out 85% of life. The most excepted theory is that a meteor hit the earth causing a mass extinction.
The largest non-avian theropods evolve including the Tyrannosaurs and the Carcharodontosaurs. One of the biggest mass extinctions occurs at 65 MYA and wipes out 85% of life. The most excepted theory is that a meteor hit the earth causing a mass extinction.
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