To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie S1. Holotype of A. spinosus gen. et sp. nov.: movie of the virtual reconstruction rotating about the long axis. Tiny individuals attached to a new Silurian arthropod suggest a unique mode of brood care Derek E. G. Briggs, Derek J. Siveter, David J. Siveter, Mark D. Sutton, and David Legg PNAS. 2016. DOI: 10.1073/pnas.1600489113 Download Original Video Browse All Videos »