The idea was to explain that one can find traces in stone in the form of imprints. Typically these would be trilobites or shells, but also leaves and actual ani

The idea was to explain that one can find traces in stone in the form of imprints. Typically these would be trilobites or shells, but also leaves and actual animal steps. It was more an introduction to the idea of fossilization, layers of sediments etc. than a university course :) with the general message of "you can find traces of stuff in stones, and next we will crack open a stone to show you that". Not far away from that place there is a church with steps built from sedimentary stone where there are plenty of fossiles so it was a nice introduction.