Fossil of a Williamsonia leaf from the Middle Jurassic Period. Williamsonia had hermaphroditic flowers and grew in marshy conditions. It is related to modern-day cycads. This leaf is preserved as a thin carbon film on sandstone | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Biophoto Associates |
Taille de l’image : | 3401 px × 5136 px |
Model Release : | Non requis |
Restrictions : |
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