A taste for the unusual. Green, flat pebbles used by late Neanderthals.

Neanderthals collected unusual, sometimes colorful mineral materials from different sources. Several green serpentinite smooth pebbles with a flat shape and use modifications were unearthed at Fumane Cave in northern Italy. This study explores cognitive and functional criteria that influenced the selection and use of unique pebbles based on their regional geology, morphology, petrology, use wear, and residues. Besides the attraction for green materials, there is no evidence for the use of soft green and flat pebbles, like those from Fumane Cave, during the Middle Palaeolithic. Moreover, these materials were collected by Neanderthals only from ca. 44 ka cal BP, despite the large availability of green serpentine pebbles in the alluvial beds near the cave. Ultimately, we provide new data to understand the role of aesthetic and technological factors in shaping the human behavioral range in the Middle Paleolithic.