Williamsonia
From Wikipedia, the free encyclopedia
Williamsonia is also a genus of corduliid dragonflies
| Williamsonia Fossil range: Cretaceous |
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 Fossil seed cone of Williamsonia from the Jurassic
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Williamsonia is a fossil genus of Bennettitales, an extinct group of seed plants. The plants looked a bit like a cycad, with slender trunks up to two meters tall topped with a crown of leaves.
The genus is used for fossil cones containing ovules, from which seeds would have later developed. The cones are round and include up to 50 seeds packed in among the cone scales.
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