Bernardes-De-Oliveira M, De Castro-Fernandes M, Tewari R, Ricardi-Branco F. Platyspermic seeds from the Early Permian of Parana Basin, Brazil. JPS [Internet]. 2007 Dec. 31 [cited 2024 Apr. 20];56:1-19. Available from: https://www.jpsonline.co.in/index.php/jop/article/view/59