AUTHOR=Rugani Rosa , Vallortigara Giorgio , Priftis Konstantinos , Regolin Lucia 

TITLE=Piece of Evidence. Commentary: Ancestral Mental Number Lines: What Is the Evidence?

JOURNAL=Frontiers in Psychology

VOLUME=7

YEAR=2016

URL=https://www.frontiersin.org/journals/psychology/articles/10.3389/fpsyg.2016.00553

DOI=10.3389/fpsyg.2016.00553

ISSN=1664-1078