| Bryozoa. RS Bassler Treatise on invertebrate paleontology, 253, 1953 | 759* | 1953 |
| North American early tertiary bryozoa F Canu, RS Bassler US Government Printing Office, 1920 | 483 | 1920 |
| Bibliographic Index of American Ordovician and Silurian Fossils... RS Bassler US Government Printing Office, 1915 | 374 | 1915 |
| Bibliographic and faunal index of Paleozoic pelmatozoan echinoderms RS Bassler, MW Moodey Geological Society of America, 1943 | 299 | 1943 |
| Bryozoa of the Philippine region F Canu Bulletin of the United States National Museum 100, 1-685, 1929 | 295 | 1929 |
| A classification of the toothlike fossils, conodonts, with descriptions of American Devonian and Mississippian species EO Ulrich, RS Bassler Proceedings of the United States National Museum, 1926 | 294 | 1926 |
| The early Paleozoic Bryozoa of the Baltic provinces RS Bassler US Government Printing Office, 1911 | 253 | 1911 |
| Classification and stratigraphic use of the conodonts RS Bassler Geological Society of America, Bulletin 36, 218-220, 1925 | 241 | 1925 |
| Faunal lists and descriptions of Paleozoic corals RS Bassler Geological Society of America, 1950 | 189 | 1950 |
| Fossil and Recent Bryozoa of the Gulf of Mexico region F Canu, RS Bassler US Government Printing Office, 1928 | 170 | 1928 |
| A synopsis of American early Tertiary cheilostome Bryozoa F Canu, RS Bassler US Government Printing Office, 1917 | 166 | 1917 |
| The stratigraphy of the Central Basin of Tennessee RS Bassler (No Title), 1932 | 150 | 1932 |
| Paleozoic Ostracoda: their morphology, classification and occurrence EO Ulrich, RS Bassler Maryland Geological Survey, Silurian 9, 271-391, 1923 | 146 | 1923 |
| The Permian Bryozoa of Timor RS Bassler Palaeontologie von Timor, XVI Lieferung 28, 36-89, 1929 | 138 | 1929 |
| Taxonomic notes on genera of fossil and Recent Bryozoa RS Bassler Journal of the Washington Academy of Sciences 42 (12), 381-385, 1952 | 135 | 1952 |
| Classification of the cheilostomatous Bryozoa F Canu, RS Bassler Proceedings of the United States National Museum, 1927 | 132 | 1927 |
| A synopsis of American fossil Bryozoa, including bibliography and synonymy JM Nickles, RS Bassler US Government Printing Office, 1900 | 132 | 1900 |
| Studies on the cyclostomatous Bryozoa F Canu, RS Bassler Proceedings of the United States National Museum, 1922 | 117 | 1922 |
| Les Bryozoaires du Maroc et de Mauritanie (2e mémoire) F Canu, RS Bassler Institut Scientifique Chérifien, 1928 | 115 | 1928 |
| Cambrian and Ordovician [deposits of Maryland RS Bassler Johns Hopkins Press, 1919 | 105* | 1919 |
Edward O. Ulrich (1857-1904)Curator, Dept. Paleobiology, National Museum of Natural History, Smithsonian InstitutionVerified email at si.edu
