BioStor
 | Bryozoa of the Pacific Coast of America. Part 2, Cheilostomata Ascophora Raymond C Osburn (1952) Allan Hancock Pacific Expedition 14: 1-611 |
 | A nomenclatural index to 'A history of the British Marine Polyzoa' by T.Hincks (1880) J S Ryland (1969) Bulletin of the British Museum (Natural History) 17: 207-260 |