The Famennian to Lower Viséan at Drewer (northern Rhenish Massif)

uppermost Famennian Milankovitch Cyclicity - Drewer Sandstone (pre-Hangenberg regression) - anoxic Hangenberg Black Shale Event (lower Hangenberg Crisis Interval) - Hangenberg Regression with early postextinction goniatites (middle Hangenberg Crisis Interval) - Stockum Limestone equivalents (Upper Hangenberg Crisis Interval) - D/C boundary and cyclic Lower Tournaisian with pelagic fauna - euxinic global Lower Alum Shale Event with...