Fig. 6From: Review of the bennettitalean genus WeltrichiaReconstruction of Weltrichia ayuquiliana Delevoryas 1991, Middle Jurassic, Tecomazuchil Formation, Oaxaca State, Mexico. The elongated pollen sacs occurring on the adaxial surface of the centrifugal rays continue inside the central cup of the reproductive structure. Adaxial view, scale bar: 20 mmBack to article page