World Register of Marine Species (WoRMS)
Hayward, B.W.; Le Coze, F.; Vachard, D.; Gross, O. (2026). World Foraminifera Database. Ophthalmidium circulare (Chapman, 1915). Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=1761700 on 2026-08-30
Chapman, F. (1915). Report on the Foraminifera and Ostracoda obtained by the F.I.S. "Endeavour" from the east coast of Tasmania, and off Cape Wiles, South Australia. In: Zoological results of the fishing experiments carried on by the F.I.S. "Endeavour," 1909-1914, Fisheries. 3(1): 1-51.