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Studies of Evolution in the Genus Spirifer. By Carroll Lane Fenton. pp. x + 436, 50 plates, and 204 text-figures. Publications of the Wagner Free Institute of Science, ii. Philadelphia, 1931.

Published online by Cambridge University Press:  01 May 2009

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Geological Magazine , Volume 69 , Issue 7 , July 1932 , pp. 332 - 333
Copyright
Copyright © Cambridge University Press 1932

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References

page 332 note 1 The term “ phratry ” is defined on p. 30 as “ A monophyletic or nearly monophyletic group composed of two or more gentes which may differ widely, however, in their evolutionary trends ”.