Crossword puzzle clue "longest time span geologically"

Here are the possible solutions for longest time span geologically clue

Answer
Clue
Relevancy
eon
Clue
Longest time span, geologically
Long time, geologically
One billion years, geologically
365 billion days, geologically
Definition
a long period of time, also AEON
cenozoicera
Clue
You're living in it, geologically
eons
Clue
One billion years, geologically
Billions of years, geologically
A billion years, geologically
Definition
EON, a long period of time, also AEON

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