Crossword puzzle clue "long geological time period"

Here are the possible solutions for long geological time period clue

Answer
Clue
Relevancy
eon
Clue
Long long long long long long long time
Long geological time period
Long, long, long time period
Long geological period
Definition
a long period of time, also AEON
aeon
Clue
Long geological time period
Long geological period
Long geological period (var.)
Geological time period
Definition
the largest division of geological time, composed of several eras, also EON

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