Crossword puzzle clue "units of geologic time"

Here are the possible solutions for units of geologic time clue

Answer
Clue
Relevancy
eons
Clue
Units on the geologic time scale
Units of geologic time
Definition
EON, a long period of time, also AEON
eras
Clue
Units of geologic time
Definition
ERA, a main division of geological time
aeon
Clue
Geologic time unit
Geologic time span
Definition
the largest division of geological time, composed of several eras, also EON
aeons
Clue
Two or more eras in geologic time
Definition
AEON, the largest division of geological time, composed of several eras, also EON
azoic
Clue
Geologic time before life
Definition
lacking life, esp. of geological period
cene
Clue
End of geologic time?

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