The results show the existence of common fossilization dynamics throughout the stratigraphy (units GII–GIV), dominated by dissolution–(re)precipitation processes, and identify two main diagenetic pathways: (i) a pathway toward hydroxyapatite, associated with wet, acidic, and phosphatized environments characterized by intense leaching, and (ii) a pathway toward fluorine replacement in apatite nanocrystals, characterized by the intrusion of carbonates and fluorine under drier and slightly alkaline conditions. Based on these diagenetic patterns, machine-learning classification models were developed to support the recontextualization of unprovenanced fossil bone remains.