The fossils Encyclopedia shows a cross section of plant and animal kingdoms, as they have evolved from Proterozoic to the present. The plants are from the unicellular to the angiosperms classified in the first chapter the palaeo-botanical system, the animals of the unicellular to the chordates in the second to the seventh chapter paleozoölogische the system. In all systematic categories from the tribes (sections) to the families of the periods indicated, in which they occur, the dates are specified by a stratigraphic table at the end of the book