Phoenix windmillis
Flower
Early Eocene
Green River Formation
Rio Blanco, Colorado, USA

Rare 8mm palm flower on 35mm slab.

Phoenix is a plant genus containing various date palms that dates back to the Late Cretaceous and still lives today.

For more information, see:

Allen, S.E.  2015.

Fossil Palm Flowers from the Eocene of the Rocky Mountain Region with Affinities to Phoenix L. (Arecaceae: Coryphoideae).  International Journal of Plant Sciences,  Vol. 176, No. 6 (July/August 2015), pp. 586-596.