History by Timeline
(NOTE: BYA = Billions of Years Ago, MYA = Millions of Years Ago, KYA = Thousands of Years Ago, YA = Years Ago)
*
|
550MYA
|
505MYA
|
438MYA
|
408MYA
|
360MYA
|
320MYA
|
286MYA
|
248MYA
|
65MYA
|
PERIOD
|
CAMBRIAN
|
ORDOVICIAN
|
SILURIAN
|
DEVONIAN
|
MISSISSIPPIAN
|
PENNSYLVANIAN
|
PERMIAN
|
**
|
**
|
ERA
|
PALEOZOIC
|
MESOZOIC
|
CENOZOIC
|
EON
|
PHANEROZOIC
|
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