Fig. 4From: A new macrofossil ephedroid plant with unusual bract morphology from the Lower Cretaceous Jiufotang Formation of northeastern ChinaOvulate cones displaying variation of bracts in genera related to Jianchangia gen. nov. a Beipiaoa spinosa Dilcher & al. displaying spinose bracts; b Gurvanella dictyoptera Krassilov displaying a bract having many furcate veins, c Ephedra torreyana S. Watson displaying obtuse bractsBack to article page