Nishimura T, Tokuda IT, Miyachi S, Dunn JC, Herbst CT, Ishimura K, Kaneko A, Kinoshita Y, Koda H, Saers JPP, Imai H, Matsuda T, Larsen ON, Jürgens U, Hirabayashi H, Kojima S, Fitch WT. Evolutionary loss of complexity in human vocal anatomy as an adaptation for speech. Science, 377: 760-763 (2022).