Following the example of Professor K. Martin I have as far as possible used the subdivision given by P. Fischer in his „Manuel de Conchyliologie et de Paléontologie Conchyliologique”. For the stratigraphy I used the system of E. Haug: „Traité de Géologie”. Following the general custom, however, the Rhaetian is counted to the Trias and the Berriasian as formation parting the Jurassic from the Cretaceous.