Maheshwari H, Singh V, Bajpai U. Venation pattern in the sphenophyll Trizygia speciosa Royle from the Raniganj Formation. JPS [Internet]. 1988 Dec. 31 [cited 2024 May 9];37((1-3):26-35. Available from: https://www.jpsonline.co.in/index.php/jop/article/view/1596