Crossword clues for Down periods 8 letters:DRPEPPERBrand whose official name actually doesn't have a periodMAGRITTEArtist that had a "Renoir period" (no, it wasn't Renoir)SILURIANPeriod in which early invertebrate land animals appearedTIMELOANAdvance that can only be repaid after a specified periodDOGWATCHDuty period on shipboard.MEANTIMEIntervening periodSPACEAGEPeriod that began with Sputnik I's launchREDSCARE'50s political periodJURASSICPeriod of dinosaursREMSLEEPDreaming periodPHASEONELaunching periodLEAPYEARPeriod with a February 29thSTONEAGEThe Flintstones periodBRASSERAEarly period in automakingSTEAMAGEPeriod in locomotive historyTIMESPANParticular periodPRENATALOf an expectant period.JAILTERMPeriod after a sentence?SESSIONSCourtroom periodsREDALERTCrisis periodAPRESSKIRelaxation period after hitting the slopesBULLETINPeriodicalOBAMAERAPolitical period of Biden's vice presidencyDARKAGESEarly part of medieval period.SEMESTERPeriod of instruction.STONEAGEPeriod of human culture.RETREATSPeriods of seclusion.STONEAGEPeriod in human culture.STONEAGEPeriod of prehistory.STONEAGEEolithic periodMETOOERAPeriod of social accountabilityBLUEMOONRelatively long period of timeSTONEAGEEarly periodDOLDRUMSSlack periodRESPITESBrief periods of relaxationOVERTIMEFifth period, in basketballDARKAGESPeriod during which Charlemagne livedSEMESTERPeriod at collegeSHORTRUNBrief period of timeSHEDDINGPeriodic activity of snakesLASTYEARDuring the prior annual periodDURATIONPeriodSESSIONSRap or jam periodsEOLITHICPeriod at the beginning of the Stone AgeTRIASSICMesozoic Era periodSIXTYDAYLike some billing periodsSESSIONSTraining periodsSTONEAGERocky period?TRIASSICPeriod in which dinosaurs appearedSABBATHSRest periods