Comparison of the Oligocene Bridge Creek palynoflora (Oregon) with that from a modern coast redwood forest.
Reference:
Reiswig,K.N. et al. (1984)
Comparison of the Oligocene Bridge Creek palynoflora (Oregon) with that from a modern coast redwood forest. American Association of Stratigraphic Palynologists,16th Annual Meeting,Program and Abstracts
Vol. 8 P. 258- 258