Crossword puzzle clue "memorable time span"

Here are the possible solutions for memorable time span clue

Answer
Clue
Relevancy
era
Clue
Memorable time span
Memorable span
Definition
a main division of geological time
week
Clue
Time's time span
aeon
Clue
Geologic time span
Vast time span
Time span in a geology book
Really long time span
Definition
the largest division of geological time, composed of several eras, also EON
ano
Clue
Time span with a tilde

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