Singh, V., Srivastava, A. and Maheshwari, H. 1986. Sphenopsids from the Barakar Formation of Hura Tract, Rajmahal Hills, Bihar. Journal of Palaeosciences. 35, (1-3) (Dec. 1986), 236–241. DOI:https://doi.org/10.54991/jop.1986.1536.