World Register of Marine Species (WoRMS)
Hayward, B.W.; Le Coze, F.; Vachard, D.; Gross, O. (2026). World Foraminifera Database. Obsoletes tethydis (Igo, 1972)&nbsp;&#8224;. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=1551501 on 2026-08-30
Igo, H. (1972). Fusulinacean fossils from Thailand. Part 6. Fusulinacean fossils from North Thailand. In: Kobayashi, T., Toriyama, R. (Eds.), Geology and Palaeontology of Southeast Asia. University Tokyo Press. 10: 63-116.