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Extinction-Origination Equilibria in Late Cenozoic Land Mammals of North America

S. David Webb
Evolution
Vol. 23, No. 4 (Dec., 1969), pp. 688-702
DOI: 10.2307/2406863
Stable URL: http://www.jstor.org/stable/2406863
Page Count: 15
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Extinction-Origination Equilibria in Late Cenozoic Land Mammals of North America
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