Cycad
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Cycads —constituting the division Cycadophyta—are seed plants with a stout, woody cylindrical trunk with a crown of large, hard, stiff, evergreen and usually pinnate leaves. The species are dioecious,
Growth habit
Rosette of pinnate leaves around a cylindrical trunk
Leaves and strobilus of Encephalartos sclavoi
Bennettitales
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Bennettitales is an extinct order of seed plants that first appeared in the Permian period and became extinct in most areas toward the end of the Cretaceous. Bennettitales were amongst the most common
Bennettitales foliage assigned to the genus Pterophyllum
Fossil of Ohaniella, a williamsoniaceous bennettitalean known from a whole plant, showing Ptilophyllum-type leaves attached to a stem
Fossils and schematic drawing of Pterophyllum bavieri from the Triassic of Iran