Crossword puzzle clue "geological time series"

Here are the possible solutions for geological time series clue

Answer
Clue
Relevancy
eras
Clue
Geological time series
Definition
ERA, a main division of geological time
aeon
Clue
Geological time
Geological time period
Longest division of geological time
Geological time division
Long geological time period
Longest division of geological time (var.)
Geological time division (Var.)
Definition
the largest division of geological time, composed of several eras, also EON

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