Acknowledgments; Introduction: Historical Formations and Organic Forms, Michael James Bennett and Tano Posteraro; 1. Unnatural Nuptials, Barry Allen; 2. The Egg: Deleuze between Darwin and Ruyer, Jon Roffe; 3. Framing Sexual Selection: Elizabeth Grosz’s work on Deleuze, Darwin and Feminism, Erin Hortle and Hannah Stark; 4. Deleuze, Developmental Systems Theory, and the Philosophy of Nature, Michael James Bennett; 5. Deterritorialisation and Creative Involution: A Note on Guattari and Deleuze, Paul-Antoine Miquel; 6. Hydrosocial Becomings: Evolutionary Perspectives on Water Assemblages, Maya Kingship and Johan Normark; 7. Against Social Evolution: Deleuze and Guattari’s Social Topology, Daniel W. Smith; 8. Epigenesis and the Outside, Claire Colebrook; Notes on Contributors.