Gehrener Formation

The Gehrener Schichten (German for Gehren Formation) is a geologic formation in Germany. The fluvial to lacustrine shales preserve fossils dating back to the Late Carboniferous period (Stephanian C in European stratigraphy or Gzhelian in international stratigraphy).

Fossil content
The following fossils were reported from the formation:
 * Insects
 * Protelytroptera
 * Blattocoleidae
 * Blattocoleus tillyari
 * Blattodea
 * Mylacridae
 * Opsiomylacris (Opsiomylacris) densistriata