Singh V, Srivastava A, Maheshwari H. Sphenopsids from the Barakar Formation of Hura Tract, Rajmahal Hills, Bihar. JPS [Internet]. 1986 Dec. 31 [cited 2024 Nov. 21];35((1-3):236-41. Available from: https://jpsonline.co.in/index.php/jop/article/view/1536