| Climatic zones of Martinez Eocene time Roy Ernest Dickerson (1917) Proceedings of the California Academy of Sciences 7: 193-196 | |
| Rectifications of nomenclature G Dallas Hanna (1924) Proceedings of the California Academy of Sciences 13: 151-186 | |
| Marine Miocene and related deposits of north Colombia Frank Marion Anderson (1929) Proceedings of the California Academy of Sciences 18: 73-213 |