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Pollen Analysis of Fossil Packrat Middens from the Sonoran Desert

Published online by Cambridge University Press:  20 January 2017

James E. King
Affiliation:
Quaternary Studies Center, Illinois State Museum, Springfield, Illinois 62706
Thomas R. Van Devender
Affiliation:
Department of Geosciences, University of Arizona, Tucson, Arizona 85721

Abstract

Pollen contained in 22 fossil packrat middens from the Sonoran Desert provides a complementary, but differing, view of the paleoenvironment from that derived by analysis of the associated plant macrofossils. The regional component of the pollen data is in sharp contrast to the locally oriented macrofossils. A total of 84 macrofossil taxa and 47 pollen taxa were identified; only 18 taxa were common to both. The low Index of Similarity, 0.4, indicates that the two sources of fossil information are providing different sets of paleobotanical data. When combined with plant macrofossils and good radiocarbon dating control, the pollen spectra derived from fossil middens are compatable with other paleoenvironmental sequences.

Type
Research Article
Copyright
University of Washington

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