Late Tertiary Microflora from the Basin and Range Province, Arizona

Science  15 Jul 1960:
Vol. 132, Issue 3420, pp. 147-148
DOI: 10.1126/science.132.3420.147


Sediments of probable Clarendonian age from central Arizona have furnished the only late Tertiary pollen assemblage known from the Southwest. The associated trees, shrubs, and herbs resemble the chaparral and conifer-oak woodland communities of the semiarid foothills and mountains of central and southeastern Arizona, and suggest a late Tertiary landscape and climate for central Arizona similar to that of today.