Sashida, K. ., T. . Ito, S. Salyapongse, and P. Putthapiban. “Additional occurrence report on early Carboniferous radiolarians from southern peninsular Thailand”. Thai Geoscience Journal, vol. 2, no. 2, July 2021, pp. 72-87, https://ph03.tci-thaijo.org/index.php/TGJ/article/view/1789.