found at the cliffs of
Stohl
North European Plain Germany
Geological Time: Paleogene Paleocene Selandian
Kerteminde Marl
the raw material was collected together with Stefan Polkowsky.
It was then cracked and forams picked and imaged by
identified by Brotzen as G. problema, which is seen by WFD as a synonym. It is preserved as a steinkern.
The identification is based upon:
Brotzen, F., 1948: