Châtelperronian cultural diversity at its western limits: Shell beads and pigments from La Roche-à-Pierrot, Saint-Césaire - François Bachellerie; Brad Gravina; Solange Rigaud; Laure Dayet; Marc Thomas; Loïc Lebreton; Eugène Morin; Camille Lesage; Christophe Falguères; Edouard Bard; Jean-Jacques Bahain; Mickaël Baillet; et al. (Proceedings of the National Academy of Sciences, 2025)