Inoceramid bivalves from the Coniacian (Upper Cretaceous) of the Staffhorst shaft (Lower Saxony, Germany) – Stratigraphical significance of a unique succession

The Staffhorst shaft (Lower Saxony, Germany) ranks amongst the critical sections for documentation of the inoceramid record of the Euramerican Coniacian Stage (Upper Cretaceous). In spite of a number of disadvantages (i.e., interval sampling and stratigraphical gaps), this section does provide details of the inoceramid distribution across insufficiently known substage boundary intervals of the Coniacian. The lower–middle Coniacian boundary is...