Insights into early animal evolution from the genome of the xenacoelomorph worm Xenoturbella bocki by Schiffer, PH, Natsidis, P, Leite, DJ, Robertson, HE, Lapraz, F, Marlétaz, F, Fromm, B, Baudry, L, Simpson, F, Høye, E, Zakrzewski, AC, Kapli, P, Hoff, KJ, Müller, S, Marbouty, M, Marlow, H, Copley, RR, Koszul, R, Sarkies, P, Telford, MJ