Symbolic use of marine shells and mineral pigments by Iberian Neandertals 115,000 years ago Hoffmann, Dirk L. ; Angelucci, Diego E. ; Villaverde, Valentín ; Zapata, Josefina ; Zilhão, João Abstract Publication: Science Advances Pub Date: February 2018 DOI: 10.1126/sciadv.aar5255 Bibcode: 2018SciA....4.5255H