DescriptionPterophyllum rectum - Muséum de Grenoble.jpg
Français : Fossile de Pterophyllum rectum.
- 205 millions d'années.
Coll. Muséum d'histoire naturelle de Grenoble.
(Pterophyllum rectum, embranchement de Préspermaphytes (Prespermaphyta) ou Préphanérogames, groupe des Cycas, ancêtre des plantes à fleurs et à graines.)
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