BioStor
 | Revision of W. M. Gabb's Tertiary Mollusca of Santo Domingo Henry A Pilsbry (1921) Proceedings of The Academy of Natural Sciences of Philadelphia 73: 305-435 |
 | Paleontology of Coyote Mountain, Imperial County, California G Dallas Hanna (1926) Proceedings of the California Academy of Sciences 14: 427-503 |
 | The marine Miocene deposits of north Colombia Frank Marion Anderson (1927) Proceedings of the California Academy of Sciences 16: 87-95 |
 | Marine Miocene and related deposits of north Colombia Frank Marion Anderson (1929) Proceedings of the California Academy of Sciences 18: 73-213 |