in clay pits in Hammerthal
North European Plain Germany
Project: Glacial erratics
Geological Time: Paleogene Oligocene Rupelian
the specimen is photographed by Michael Hesemann and contributed by
The identification is based upon:
, : d'Orbigny, A. (1826). Tableau méthodique de la classe des céphalopodes. Annales des Sciences Naturelles (1) 7: 96–169. Plate , Fig.
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