Williamsonia (plant)
| Williamsonia Temporal range: | |
|---|---|
| Williamsonia fossil (CNU 39), National Museum of Natural History | |
| Scientific classification | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Order: | †Bennettitales |
| Family: | †Williamsoniaceae |
| Genus: | †Williamsonia Carruth., 1870 |
| Type species | |
| Williamsonia gigas Carruth., 1870 | |
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 are associated with plants that also bore the male flower-like reproductive structure Weltrichia.