This XfrogPlants Williamsonia 3D model collection contains three highly detailed, fully textured variations of the plant at different ages.

Bennettitale
Period: Jurassic to Cretaceous
Environment: tropical forests, open plains, in association with tree ferns
Climate: warm and humid

Notes:
Wiliamsoniae are the biggest of the Bennettitales order which some thinks (but it’s still disputed) that could be part of the big family of Cycadeoideae, which dominated the flora of Jurassic and Cretaceous. Williamsonia gigas was in turn the biggest of all Williamsoniae and could grow as tall as a small tree. It’s most distinctive features are the big “flowers”, which were really a group of seeds surrounded by a crown of bracteae. However they must have looked remarkable in a flowerless landscape such as that of Jurassic. Williamsonia was a largely diffused plant throughout the Jurassic but was present (although less numerous) in the Cretaceous as well.