2.5 billion - 543 million years ago
541 million - 485 million years ago
485 million - 444 million years ago
444 million - 419 million years ago
419 million - 359 million years ago
359 million - 299 million years ago
299 million - 252 million years ago
252 million - 201 million years ago
201 million - 145 million years ago
145 million - 66 million years ago
66 million - 1.7 million years ago
1.7 million years ago - the present times
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