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488,300,000 B.C.
| -488,300,000 | EVOLUTION Ordovician period and Early Ordovian epoch begin on Earth. First extinction event. |
488,000,000 B.C.
| -488,000,000 | EVOLUTION Fish develop jaws, gills and armor plating. |
475,800,000 B.C.
| -475,000,000 | EVOLUTION Plants move onto land. |
471,800,000 B.C.
| -471,800,000 | EVOLUTION Middle Ordovian epoch begins on Earth. |
461,000,000 B.C.
| -461,000,000 | EVOLUTION Late Ordovian epoch begins on Earth. |
450,000,000 B.C.
| -450,000,000 | EVOLUTION Arthropods move onto land. |
443,700,000 B.C.
| -443,700,000 | EVOLUTION Silurian period and Early Silurian or Llandovery epoch begin on Earth. |
440,000,000 B.C.
| -440,000,000 | EVOLUTION Ordovician-Silurian extinction event is complete. |
428,200,000 B.C.
| -428,200,000 | EVOLUTION Wenlock epoch begins on Earth. |
423,000,000 B.C.
| -423,000,000 | EVOLUTION Late Silurian or Ludlow epoch begins on Earth. |
418,700,000 B.C.
| -418,700,000 | EVOLUTION Pridoli epoch begins on Earth. |
416,000,000 B.C.
| -416,000,000 | EVOLUTION Devonian period and Early Devonian epoch begin on Earth. |
400,000,000 B.C.
| -400,000,000 | EVOLUTION The first insects and sharks evolve on Earth. |
397,500,000 B.C.
| -397,500,000 | EVOLUTION Middle Devonian epoch begins on Earth. |
385,300,000 B.C.
| -385,300,000 | EVOLUTION Late Devonian epoch begins on Earth. |
375,000,000 B.C.
| -375,000,000 | EVOLUTION Tiktaalik (lobe-finned) fish evolve on Earth. |
370,000,000 B.C.
| -370,000,000 | EVOLUTION Cladoselache, a high-speed shark, develops on Earth. |
365,000,000 B.C.
| -365,000,000 |
EVOLUTION Late Devonian extinction occurs on Earth.
| -365,000,000
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EVOLUTION New insect species evolve on Earth.
| -365,000,000
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EVOLUTION Fish evolve into tetrapods on Earth.
| -360,000,000
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EVOLUTION Plants develop seeds on Earth.
| -360,000,000
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EVOLUTION The golden age of sharks begins on Earth.
| -360,000,000
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EVOLUTION Creation of Wooleigh crater and Siljan Ring on Earth.
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359,200,000 B.C.
| -359,200,000 | EVOLUTION Carboniferous period and Early Mississippian epoch begin on Earth. |
350,000,000 B.C.
| -350,000,000 | EVOLUTION Karoo Ice Age begins on Earth. |
345,300,000 B.C.
| -345,300,000 | EVOLUTION Middle Mississippian epoch begins on Earth. |
326,400,000 B.C.
| -326,400,000 | EVOLUTION Late Mississippian epoch begins on Earth. |
318,100,000 B.C.
| -318,100,000 | EVOLUTION Early Pennsylvanian epoch begins on Earth. |
311,700,000 B.C.
| -311,700,000 | EVOLUTION Middle Pennsylvanian epoch begins on Earth. |
306,500,000 B.C.
| -306,500,000 | EVOLUTION Late Pennsylvanian epoch begins on Earth. |
300,000,000 B.C.
| -300,000,000 |
EVOLUTION Supercontinent Pangea forms on Earth.
| -300,000,000
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EVOLUTION Reptiles develop eggs, insects develop wings, forests cover the Earth.
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299,000,000 B.C.
| -299,000,000 | EVOLUTION Permian period and Cisuralian epoch begins on Earth. |
286,000,000 B.C.
| -286,000,000 | EVOLUTION The golden age of sharks ends on Earth. |
280,000,000 B.C.
| -280,000,000 | EVOLUTION Dragonflies develop 2-foot wing spans. Vertarates, reptiles eveolve on Earth. |
270,600,000 B.C.
| -270,600,000 | EVOLUTION Guadalupian epoch begins on Earth. |
260,400,000 B.C.
| -260,400,000 | EVOLUTION Lopingian epoch begins on Earth. |
256,000,000 B.C.
| -256,000,000 | EVOLUTION Mammel-like reptiles develop on Earth. |
251,400,000 B.C.
| -251,400,000 | EVOLUTION Mesozoic era, Triassic period and Early Triassic epoch begin on Earth. |
250,000,000 B.C.
| -250,000,000 |
EVOLUTION Karoo Ice Age ends on Earth.
| -250,000,000
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EVOLUTION Permian-Triassic extinction event wipes out 90% of all animals.
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245,000,000 B.C.
| -245,000,000 | EVOLUTION Middle Triassic epoch begins on Earth. |
228,000,000 B.C.
| -228,000,000 | EVOLUTION Late Triassic epoch begins on Earth. |
220,000,000 B.C.
| -220,000,000 | EVOLUTION Earth’s climate becomes very dry. Dinosaurs develop. |
208,000,000 B.C.
| -208,000,000 | EVOLUTION Second major spread of sharks. |
200,000,000 B.C.
| -200,000,000 | EVOLUTION Fifth mass extinction event occurs. |
199,600,000 B.C.
| -199,600,000 | EVOLUTION Jurassic period and Early Jurassic epoch begin on Earth. |
180,000,000 B.C.
| -180,000,000 | EVOLUTION Supercontinent Pangea begins to break up on Earth. |
175,600,000 B.C.
| -175,600,000 | EVOLUTION Middle Jurassic epoch begins on Earth. |
164,000,000 B.C.
| -164,000,000 | EVOLUTION Castorocauda lutrasimilis, a swimming mammal lives on Earth. |
161,200,000 B.C.
| -161,200,000 | EVOLUTION Late Jurassic epoch begins on Earth. |
150,000,000 B.C.
| -150,000,000 |
EVOLUTION Giant dinosaurs are common on Earth.
| -150,000,000
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EVOLUTION Birds evolve from theropod dinosaurs.
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145,500,000 B.C.
| -145,500,000 | EVOLUTION Cretaceous period and Early Cretaceous epoch begin on Earth. |
135,000,000 B.C.
| -135,000,000 | EVOLUTION New dinosaurs appear on Earth. |
133,000,000 B.C.
| -133,000,000 | EVOLUTION Jeholomis prima, a primitive bird lives on Earth. |
130,000,000 B.C.
| -130,000,000 | EVOLUTION Plants develop flowers, causing a major burst of evolution on Earth. |
128,000,000 B.C.
| -128,000,000 | EVOLUTION A small, feathered tyrannosaur lives on Earth. |
125,000,000 B.C.
| -125,000,000 | EVOLUTION Eomaia scansoria lives on Earth. |
123,000,000 B.C.
| -123,000,000 | EVOLUTION More dinosaurs develop feathers. |
110,000,000 B.C.
| -110,000,000 |
EVOLUTION 12 meter crocodile lives on Earth.
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EVOLUTION Carnivorous dinosaurs lives on Earth.
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