This is a fossil fern found in a
German coal mine in the Ruhrgebiet, probably a mine in the city of Recklinghausen.
The finder was the person responsible for the controlled demolition below ground = Schießmeister (an old name for chief blaster). Sohle = ground, here 442m below surface. Flöz = bed of coal. Hängendes = ceiling (bottom = Liegendes, wall = Anstehendes)
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