Singh, V.K., A.K. Srivastava, and H.K. Maheshwari. “Sphenopsids from the Barakar Formation of Hura Tract, Rajmahal Hills, Bihar”. Journal of Palaeosciences 35, no. (1-3) (December 31, 1986): 236–241. Accessed May 4, 2024. https://jpsonline.co.in/index.php/jop/article/view/1536.