Bulletin of the Mizunami Fossil Museum

Bulletin of the Mizunami Fossil Museum No. 46

There are no surface exposures of Mississippian (Lower Carboniferous) rocks anywhere in the Netherlands, but imported limestones of this age have been used extensively as building stones. These rocks contain a typical biota of Mississippian shelly invertebrates. Corals are common, but their diversity is limited. The first record of a large, solitary rugose coral, Clisiophyllum? sp., is discussed herein, based on a single specimen in a wall of the Cruquius Museum, province of NoordHolland. The specimen is an oblique section of a solitary rugose coral of circular section, with numerous thin, radial septa; dissepiments are poorly seen, but concentric(?), thin and convex towards the circumference; and the axial structure is moderately broad, but poorly visible.