Recent ‘new materialist’ readings of evolution by such feminists as Elizabeth Grosz, Claire Colebrook, Luciana Parisi, Susan Oyama and Myra Hird have provided important insights on the openness of evolutionary processes and the emergence of difference by focusing on evolution as a temporal dynamic. Building on Darwin's observations on geographical variation, this article highlights the importance of viewing evolution as not only temporal but also spatial. For this purpose, the article turns to population genetics and its practice of mapping the (...) early human diaspora. The article identifies a spatiotemporal dynamic of evolutionary emergence that posits gender, sexuality and race as ontologically mutually constitutive, as well as shows that such ontology is inseparable from the techniques and technologies that study it. The article argues that this mutual embeddedness of ontology and epistemology provides a site where both the limits and potential of evolutionary emergence may be examined and negotiated. (shrink)