Williamsonia
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| domain | Eukaryota | Williamsonia is an extinct genus of plant belonging to Bennettitales, an order of seed plants which bore a resemblance to cycads. Fossilized specimens of Williamsonia have been discovered worldwide.
For more information, visit the Wikipedia entry. Get back to Other Kingdoms |
| kingdom | Plantae | |
| class | Spermatopsida | |
| order | Bennettitales | |
| family | Williamsoniaceae | |
| genus | Williamsonia |
