EntityQ312468· pop 22· linked from 164 articlesseriesSign in to savesequence of rock depositions defining a chronostratigraphic unit corresponding to a specific epoch on the geologic time scaleConnectionsgeologic time scaleEntityCretaceousEntityCambrianEntityCarboniferousEntityPhanerozoicEntityNeoproterozoicEntityEdiacaranEntitystratumEntitygeochronologyEntityCryogenianEntitygeological formationEntityTonianEntityInternational Commission on StratigraphyEntityPennsylvanianEntityepochEntityMississippianEntitystageEntitychronostratigraphyEntitychronozoneEntityerathemEntityCategoriesChronostratigraphyGeochronologyGeological epochsGeological unitsGeologic time scalesGeology terminology