This time we are looking on the crossword puzzle clue for: Historic time.
it’s A 13 letters crossword definition.
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Last seen on: –Thomas Joseph – King Feature Syndicate Crossword – Feb 23 2021
–Eugene Sheffer – King Feature Syndicate Crossword – Nov 26 2020
–Eugene Sheffer – King Feature Syndicate Crossword – Sep 7 2020
–Universal Crossword – May 12 2020
–Thomas Joseph – King Feature Syndicate Crossword – Mar 31 2020
–Eugene Sheffer – King Feature Syndicate Crossword – Mar 7 2020
LA Times Crossword 5 Jul 19, Friday
Random information on the term “ERA”:
A geologic era is a subdivision of geologic time that divides an eon into smaller units of time. The Phanerozoic Eon is divided into three such time frames: the Paleozoic, Mesozoic, and Cenozoic (meaning “old life”, “middle life” and “recent life”) that represent the major stages in the macroscopic fossil record. These eras are separated by catastrophic extinction boundaries, the P-T boundary between the Paleozoic and the Mesozoic and the K-Pg boundary between the Mesozoic and the Cenozoic. There is evidence that catastrophic meteorite impacts played a role in demarcating the differences between the eras.
The Hadean, Archean and Proterozoic eons were as a whole formerly called the Precambrian. This covered the four billion years of Earth history prior to the appearance of hard-shelled animals. More recently, however, the Archean and Proterozoic eons have been subdivided into eras of their own.
Geologic eras are further subdivided into geologic periods, although the Archean eras have yet to be subdivided in this way.