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Ancient history
The study of the written past from the beginning of recorded human history to the Early Middle Ages. The span of recorded history is roughly 5,000 years, starting with Cuneiform script, the oldest discovered form of coherent writing, from the protoliterate period around the 30th century BC.
Industry: History
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Ancient history
Ordovician Period
History; Ancient history
The period of time during the history of the Earth starting about 505 million years ago.
Pennsylvanian Period
History; Ancient history
The period of time during the history of Earth starting about 320 million years ago and ending about 286 million years ago.
Period
History; Ancient history
A division of time in the history of the Earth, longer than an epoch and shorter than an era.
Devonian Period
History; Ancient history
The period of time during the history of the Earth starting about 408 million years ago and ending about 360 million years ago.
Jurassic Period
History; Ancient history
The period of time during the history of the Earth starting about 208 million years ago.
Paleocene Epoch
History; Ancient history
The period of time during the history of the Earth starting about 65 million years ago.
Paleozoic Era
History; Ancient history
The era of geological time starting about 540 million years ago and ending about 245 million years ago.
