The microscopic analysis of microfossils or sedimentological specimens is part of the basic training in palaeontology. Microfossils are often not visible in the field with the naked eye or a magnifying glass. Nevertheless, in order to determine whether a rock contains microfossils, thin sections (slices of rock a few tenths to hundredths of a mm thick) are made from a rock sample, in which cross-sections of microfossils may be visible under the microscope. The microfossils can be obtained by …