Crossword Clue:

part of a period

AnswerCrossword Clue
EPOCHPart of a period
EPOCHPart of a period, geologically
EMBERDAYPart of a church period.
EPOCHPart of a geological period.
DTSPart of a drying-out period, maybe
DARKAGESEarly part of medieval period.
EDO... Period (part of Japanese history)
NEOCENEPart of the Tertiary Period.
ICEAGEPart of the Quaternary Period
NEOGENELatter part of the Tertiary period
STONEAGEThe Paleolithic period is part of it
EPOCHPeriod part
EOCENETertiary Period part
HALFDAYPart-timer's work period, perhaps