Sashida, Katsuo, Tsuyoshi Ito, Sirot Salyapongse, and Prinya Putthapiban. 2021. “Additional occurrence report on early Carboniferous radiolarians from southern peninsular Thailand”. Thai Geoscience Journal 2 (2). Bangkok, Thailand:72-87. https://ph03.tci-thaijo.org/index.php/TGJ/article/view/1789.