nummulite

Disc-shaped nummulite fossils are common in places, and often coat the desert floor.

The formation is characterised by fossils of the nummulite Nummulites variolarius.

A nummulite is a large lenticular fossil, characterized by its numerous coils, subdivided by septa into chambers.

Like the rest of the nummulite formation of the high Glarus Alps, the Hausstock contains fine-grained black sandstone.

The very first written definition/discussion on the fossil formation (mentioning Nummulite quoted from A.M. Celâl Şengör).