Crossword puzzle clue "very long geological time unit"

Here are the possible solutions for very long geological time unit clue

Answer
Clue
Relevancy
eon
Clue
Long long long long long long long time
Very long geological time unit
Very, very, very long time
Geological time unit
Definition
a long period of time, also AEON
late
Clue
"Round here we stay up very, very, very, very ___"
Definition
coming after the expected time
epoch
Clue
Geological time unit
A unit of geological time
Unit of geological time
Definition
an important period of time, also EPOCHA

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