1931  Hahne, p.773: In SW part of Hidtfeld syncline at
Beverbach creek, N of way at Hüls-Kreuzerdrisch, brown-violet
coloured, slightly sandy shale. They seem to belong to the lower
part of the Wilhelmine coal horizon. Fossil content:
Eumorphoceras bisulcatum, Anthracoceras glabrum.