Epoch | Eras, Periods & Ages | Britannica
https://www.britannica.com/science/epoch-geologic-time
WEBepoch, unit of geological time during which a rock series is deposited. It is a subdivision of a geological period, and the word is capitalized when employed in a formal sense (e.g., Pleistocene Epoch). Additional distinctions can be made by appending relative time terms, such as early, middle, and late.
DA: 64 PA: 42 MOZ Rank: 44