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History by Timeline

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(NOTE: BYA = Billions of Years Ago, MYA = Millions of Years Ago, KYA = Thousands of Years Ago, YA = Years Ago)

	4.6BYA	3.5BYA	2.9BYA	2.5BYA	1.6BYA	900MYA	550MYA	248MYA	65MYA
PERIOD	PRECAMBRIAN						POST-CAMBRIAN *
ERA	EARLY ARCHEAN	MIDDLE ARCHEAN	LATE ARCHEAN	EARLY PROTEROZOIC	MIDDLE PROTEROZOIC	LATE PROTEROZOIC	PALEOZOIC	MESOZOIC	CENOZOIC
EON	ARCHEAN			PROTEROZOIC			PHANEROZOIC

*	550MYA	505MYA	438MYA	408MYA	360MYA	320MYA	286MYA	248MYA	65MYA
PERIOD	CAMBRIAN	ORDOVICIAN	SILURIAN	DEVONIAN	MISSISSIPPIAN	PENNSYLVANIAN	PERMIAN	**	**
ERA	PALEOZOIC							MESOZOIC	CENOZOIC
EON	PHANEROZOIC

**	248MYA	208MYA	144MYA	65MYA	53MYA	36.5MYA	23MYA	5.3MYA	2MYA	10KYA
EPOCH	---			PALEOCENE	EOCENE	OLIGOCENE	MIOCENE	PLIOCENE	PLEISTOCENE	HOLOCENE
PERIOD	TRIASSIC	JURASSIC	CRETACEOUS	TERTIARY					QUATERNARY ***
ERA	MESOZOIC			CENOZOIC
EON	PHANEROZOIC

***	2MYA	10KYA	1KYA	100YA	10YA	1YA	+10Y	+100Y	+1000Y
HISTORY	EARLY	ANCIENT	MEDIEVAL	MODERN	RECENT	NOW	FUTURE
EPOCH	PLEISTOCENE	HOLOCENE
PERIOD	QUATERNARY
ERA	CENOZOIC
EON	PHANEROZOIC

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