Crossword puzzle clue "great geological time span"

Here are the possible solutions for great geological time span clue

Answer
Clue
Relevancy
adam
Clue
Noah's great-great-great-great-great-great-great grandfather
eon
Clue
Great geological time span
Geological span
Long geological span
Definition
a long period of time, also AEON
era
Clue
Geological time span
Definition
a main division of geological time
enos
Clue
Great-great-great-great-great-grandfather of Noah
Great-great-great-great-great grandfather of Noah
aeon
Clue
Geological span
Definition
the largest division of geological time, composed of several eras, also EON

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