The function of graphic signs in prehistoric societies: The case of Cantabrian quadrilateral signs

Certain signs lend themselves particularly well to the social-markers hypothesis because they possess all of the characteristics required for this function. Such is the case of the quadrilateral signs from Upper Paleolithic contexts in the Cantabrian region, Spain. In the caves of El Castillo, La Pasiega, Altamira, and Las Chimeneas, relatively close together, we find groupings of signs that share a common quadrilateral structure but vary in terms of the arrangement of internal details. A formal analysis based on the method of correspondence analysis and other statistical tests reveals two primary groups based on these independent formal characteristics. This schema appears to the be product of a codified system that allows for a large number of variants with a high potential for distinction based on the flexible combination of a relatively small number of elements. These examples constitute a form of differential marking, of which numerous examples are known over time and across cultures, from the first modern humans to contemporary societies.