Gaillot, Jérémie, and Daniel Vachard. “The Khuff Formation (Middle East) and Time-Equivalents in Turkey and South China: Biostratigraphy from Capitanian to Changhsingian Times (Permian), New Foraminiferal Taxa, and Palaeogeographical Implications”. Coloquios de Paleontología 57 (January 15, 2008): 37–223. Accessed July 25, 2026. https://revistas.ucm.es/index.php/COPA/article/view/COPA0707110037B.