1901
1902
1903
1904
Published: 1996
Superior document: Naučnye doklady / Akademija Nauk, Ural'skoe Otdelenie, Komi Naučnyj Centr 377
1905
Published: 1967
Superior document: Enthalten in Slavia ; Československá Akademie Věd, Slovanský Ustav Praha, 1967 36.1967 S. 330—331-
1906
1907
1908
1909
1910
Published: 1976
1911
1912
1913
Published: 1949
Superior document: Chalmers Tekniska Högskolas Handlingar 86
1914
1915
1916
Published: 1968
Superior document: The University of Kansas paleontological contributions / University of Kansas, Paleontological Institute : Protozoa 7
1917
1918
1919
1920