Shaped stone balls were used for bone marrow extraction at Lower Paleolithic Qesem Cave, Israel.
Assaf E, Caricola I, Gopher A, Rosell J, Blasco R, Bar O, Zilberman E, Lemorini C, Baena J, Barkai R, Cristiani E.
Assaf E, et al. Among authors: gopher a.
PLoS One. 2020 Apr 9;15(4):e0230972. doi: 10.1371/journal.pone.0230972. eCollection 2020.
PLoS One. 2020.
PMID: 32271815
Free PMC article.