Crossword puzzle clue "periods of note"

Here are the possible solutions for periods of note clue

Answer
Clue
Relevancy
eon
Clue
Periods upon periods
Definition
a long period of time, also AEON
eras
Clue
Periods of note
Periods of historical note
Time periods of note
Periods of note, in history books
Historic periods of note
Definition
ERA, a main division of geological time
ela
Clue
Note of note in crosswords
High note of note

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