Disparate social structures are underpinned by distinct social rules across a primate radiation - Jacob A. Feder; Susan C. Alberts; Elizabeth A. Archie; Małgorzata E. Arlet; Alice Baniel; Jacinta C. Beehner; Thore J. Bergman; Alecia J. Carter; Marie J. E. Charpentier; Kenneth L. Chiou; Catherine Crockford; Guy Cowlishaw; et al. (Proceedings of the National Academy of Sciences, 2026)