BioStor
 | North American later Tertiary and Quaternary Bryozoa F Canu, and R S Bassler (1923) United States National Museum Bulletin 125: 1-302 |
 | Fossil and Recent Bryozoa of the Gulf of Mexico Region (1928) Proceedings of The United States National Museum 72: 1-199 |
 | Bryozoa of the Pacific Coast of America. Part 2, Cheilostomata Ascophora Raymond C Osburn (1952) Allan Hancock Pacific Expedition 14: 1-611 |