SCHACKOINA MOLINIENSIS REICHEL FROM THE LOWER CENOMANIAN OF NORTHEASTENGLAND AND ITS STRATIGRAPHICAL SIGNIFICANCE

The planktic foraminiferan Schackoina moliniensis Reichel is recorded and described for the first time from the Hunstanton Formation (Red Ch alk) of north-east England. Its distribution in two sections is presen ted: the upper part of the Red Cliff Hole Member of the Hunstanton For mation at Speeton in the Cleveland Basin; and from a Thalassinoides bu rrow beneath the erosion surface near the top of the Hunstanton Format ion at South Ferriby on the East Midlands Shelf. This horizon, with S. moliniensis, represents an important, easily recognizable, planktic f oraminiferal marker horizon in the lower part of the Lower Cenomanian of north-east England, and enables the extent of the non-sequence at t he Albian-Cenomanian boundary on the East Midlands Shelf to be assesse d.