Long time ago we dug near Osnabrück (NW-Germany) in a small short-time pit called "Am Danebrock".
It was full of ammonites (Androgynoceras was the most common), we got rare vertebrate-parts from there, shells, snails and and and.
Fossils were preserved in nodules. One of these contained a lobster, it was the first one of this typus ever found in northern Germany.
I gave it to the Museum in Stuttgart and wrote with famous Günther Schweigert a small paper about it (I did the geological setting, what was only 5% of this paper)
First_record_of_a_polychelid_lobster_Crustacea_Dec.pdf