billion year time period | Crossword Clue

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Here are the possible solutions for billion year time period clue

Answer

Clue

Relevancy

eon

Clue

Billion-year time period

Billion-year period

Billion-year time span

Billion-year stretch

Billion-year span

Definition

a long period of time, also AEON

aeon

Clue

Billion-year period

Definition

the largest division of geological time, composed of several eras, also EON

eons

Clue

Billion-year time spans

Definition

EON, a long period of time, also AEON

aldiss

Clue

''Billion Year Spree'' author Brian

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