¹ The paper was published by the Russian Geological Committee in two parts: Part i, in 1924, in Matériaux pour la Géologie Générale et Appliquée, livr. 25; part ii, in 1931, as a special publication. As a matter of fact, the first part was printed in 1914, but its continuation was interrupted by the Great War, Russian Revolution, and by the author leaving Russia. The author wishes to use this opportunity for expression of his deep and sincere gratitude to his friends in Russia, A. P. Karpinski, member and President of the Russian Academy of Sciences, and G. N. Fredericks, member of the Russian Geological Committee, who have been chiefly responsible for the appearance of this paper. Without the great authority of the former and the persistent efforts of the second even the first already printed part of the paper would probably never have appeared before the scientific world.Google Scholar

² Op. cit., 316 and 606.Google Scholar

³ Reuss, A. E., “Beiträge zur Charakteristik der Kreideschichten in den Ostalpen, besonders im Gosauthale und am Wolfgangsee”: Denkschr. d. K. Akad. d. Wiss., Math.-Naturw. Cl., vii, 132, Wien, 1854.Google Scholar

⁴ Op. cit., 344 and 614.Google Scholar

⁵ Foerste, A. F., “Fossils from the Silurian Formations of Tennessee, Indiana, and Illinois”: Bull. Sci. Lab. Denison University, xiv, 101, Granville, Ohio, 1909.Google Scholar

⁶ Op. cit,, 309 and 603.Google Scholar

⁷ Ibid., 312 and 604.

⁸ Ibid., 345 and 614.

⁹ Ibid., 318 and 607.

¹⁰ Ibid., 341 and 613.

¹¹ Ibid., 342 and 613.