Hayward, B.W.; Le Coze, F.; Vachard, D.; Gross, O. (2024). World Foraminifera Database. Allomorphina trigona var. obtusa Andreae, 1884 †. Accessed at: https://www.marinespecies.org/foraminifera/aphia.php?p=taxdetails&id=931390 on 2025-03-02
basis of recordEllis, B. F.; Messina, A. R. (1940-2015). Catalogue of Foraminifera. <em>Micropaleontology Press, American Museum of Natural History, New York.</em> [details]