To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Video 1 Movie S1. Rotating view of the 3D horn models used in the finite element analyses. Structural adaptations to diverse fighting styles in sexually selected weapons Erin L. McCullough, Bret W. Tobalske, and Douglas J. Emlen PNAS. 2014. 111:14484-14488 DOI: 10.1073/pnas.1409585111 Download Original Video Browse All Videos »