in clay pits in Hammerthal
North European Plain Germany
Geological Time: Paleogene Oligocene Rupelian
the specimen is photographed by Michael Hesemann with the SEM VEGA3 TESCAN at Senckenberg am Meer and contributed by
The identification is based upon:
, : Kanmacher F. (1798). Essays on the microscope. The Second Edition, with considerable additions and improvements. Dillon & Keating, London. xvii + [7 unnumbered] + 724 pp., 32 pl. Plate , Fig.