Description

Eocene

Green River Formation

Douglas Pass, CO, USA

Excellent complete 7mm flower.

See: Boucher, L et al., An extinct genus of Salicaceae based on twigs with attached flowers, fruits, and foliage from the Eocene Green River Formation of Utah and Colorado, USA, American Journal of Botany (September 2003), 90(9):1389-1399

Flower,