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Journal Article MONOPHYLY OR DIPHYLY IN THE ORIGIN OF WHALES Get access Leigh Van Valen Leigh Van Valen Department of Anatomy University of Chicago Search for other works by this author on: Oxford Academic Google Scholar Evolution, Volume 22, Issue 1, 1 March 1968, Pages 37–41, https://doi.org/10.1111/j.1558-5646.1968.tb03446.x Published: 01 March 1968 Article history Received: 20 January 1967 Published: 01 March 1968
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Leigh Van Valen (1968) studied this question.
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