Philosophy of Science 55 (3):427-434 (1988)

Marc Ereshefsky
University of Calgary
In her "Species Are Individuals" (1985), Mary Williams offers informal arguments and a sketched proof which allegedly show that species are individuals with respect to evolutionary theory. In this paper, I suggest that her informal arguments are insufficient for showing that clans are not sets and that species are individuals. I also argue that her sketched proof depends on three questionable assumptions
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DOI 10.1086/289447
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Integration, Individuality and Species Concepts.Lee Michael & Wolsan Mieczyslaw - 2002 - Biology and Philosophy 17 (5):651-660.

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