Crossword puzzle clue "at least two geological eras"

Here are the possible solutions for at least two geological eras clue

Answer
Clue
Relevancy
eon
Clue
At least two geological eras
Two or more geological eras
Two or more eras of geological time
Eras upon eras
At least two eras
Definition
a long period of time, also AEON
aeon
Clue
Eras upon eras
Definition
the largest division of geological time, composed of several eras, also EON
eons
Clue
Eras upon eras
Geological eras
Definition
EON, a long period of time, also AEON

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