Brookfield, M. E. and Westermann, G. E. G. (1982) “Mesozoic Ammonites from the Spong Valley, Zanskar, N. W. India”, Journal of Geological Society of India, 23(6), pp. 263–266. Available at: https://geosocindia.com/index.php/jgsi/article/view/65015 (Accessed: 20 September 2024).