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

Cycadeoidea
Period: Jurassic to Early Cretaceous
Environment: diffused (forests, open plains)
Climate: warm and humid

Notes:
Cycadales, but mostly Cycadeoideae (like Bennettitales) were so abundant during the Jurassic period that Jurassic is often called the “Cycads age”. Some of these plants could grow as tall as trees. Both Cycadales and Cycadeoideae are the result of the evolution of Pteridosperms, from which they started to differentiate since Triassic. Their fate was different: Cycadales, less numerous at the time, could survive Mesoizoic and arrive to present day, while Cycadeoideae, by far more numerous in the Mesozoic, could not survive the Cretaceous mass extinction and died together with the dinosaurs.