FIGURE 10 in Unravelling the origin of the brown hyena (Parahyena brunnea) and its evolutionary and paleoecological implications for the Pachycrocuta lineage

FIGURE 10. Evolutionary and paleobiogeographic hypotheses proposed in this work illustrated with the plot of the first principal component for the lower dentition. Double horizontal lines indicate bidirectional migratory flows. Empty rectangles indicate the absence of barriers to dispersal between the last three regions considered, and solid rectangles indicate geographic isolation. See the text for a more detailed explanation.