Williamsonia (plant)
Videos
Williamsonia is a genus of plant belonging to Bennettitales, an extinct order of seed plants. Within the form classification system used in paleobotany, Williamsonia is used to refer to female seed co
Williamsonia NMNH
Williamsonia sewardiana life restoration by MUSE - Science Museum, whose affinity to Williamsoniaceae has been questioned
Bennettitales
Videos
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
Williamsonia (plant)
…Williamsonia is a genus of plant belonging to Bennettitales, an extinct order of seed plants. Within the form classification system used in paleobotany, Williamsonia is used to refer to female seed cones, which…
Reconstruction of Cycadeoidea life
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