Crossword Clue:

belonging to a certain geological time period

AnswerCrossword Clue
ERALOf a geological time period
HORALOf a certain time period
SIXWEEKLike a certain period of burrowed time?
NEOCENEGeological time period
STADEGeological time period
EONGeological time period
ERAGeological time period
AEONGeological time period
ICEAGEPeriod of geological time.
STADEGeological period of time
EONLong geological time period
AEONGeological time period (Var.)
AEONLong geological time period