Trying to gain knowledge from the diverse geometrical structure of the geoglyphs in the central Peruvian Andes, we have analyzed the biomorphic figures in terms of the dimension of each figure. A first finding shows that these glyphs have a noninteger (fractal) dimension and that its value allows a classification of the figures. This result and the reasonable hypothesis that the ability of the artists who created them increased with time, leads to a chronological ordering of the biomorphs that shows an interesting evolution from single straight lines to parallel connected lines and to curvilinear nonparallel drawings before designing whole plane trapezoids.
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