Cretaceous sponges from the Campanian of Misburg and Höver
Toulminia wollemanni is a rare species not previously reported from Misburg. The specimen depicted here is incomplete and tentatively identified as Toulminia wollemanni.
The general habit of the specimen is cylindrical, but the wall (2 mm thick) is intensely folded to produce an outer surface structure similar to that of brains. However, the upper 10 mm of the wall are not folded and seem to form a cylindrical aperture of the paragaster.