X20 Level 37 Sima de las Golondrinas pronghorn phalanx B
Second phalanx of an American pronghorn (Antilocapra americana), with multiple human-made cut marks around its proximal articulation. Possible portable art object. Found in metric level 37 of excavation X-20 at Sima de las Golondrinas cave, northern Zacatecas, Mexico. Not directly dated. Chronology based on dating charcoals in related sediments: Late Pleistocene, probably terminal Last Glacial Maximum (LGM), older than 16,000 calibrated years before present (calBP).
Sima de las Golondrinas, Zacatecas, Mex. Excavation X-20 early materials