The nature of the Cenomanian–Turonian Oceanic Anoxic Event (CTOAE) and its δ13 C Excursion is considered in light (1) stratigraphical framework which CTOAE developed European shelf seas, (2) conclusions that can be drawn from new detailed investigations Chalk succession at three locations England, Melton Ross Flixton Northern Province where organic-rich ‘black bands’ are present, Dover Southern...