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Science 26 October 1984:
Vol. 226. no. 4673, pp. 439 - 441
DOI: 10.1126/science.226.4673.439
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Articles

A New Basis for Recognizing the Paleocene/Eocene Boundary in Western Interior North America

SCOTT L. WING 1

1 Department of Paleobiology, National Museum of Natural History, Washington, D.C. 20560

Fossil pollen grains from Paleocene-Eocene rocks of the Bighorn Basin of Wyoming allow important sequences of terrestrial vertebrate fossils to be correlated with standard marine microfossil zonations. The Paleocene/Eocene boundary as based on pollen evidence falls within the Wasatchian land mammal age, much higher than the boundary used by some fossil mammal workers. This discrepancy partly results from multiple definitions of the Paleocene/Eocene boundary but may also indicate faulty mammal-based correlations to the type Sparnacian of France.

Submitted on April 16, 1984
Accepted on July 27, 1984


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