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. 2012 Jul 5;367(1597):1837–1846. doi: 10.1098/rstb.2011.0217

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Figure 7. — Estimated community size for individual hominin fossil populations, based on fossil cranial data from De Miguel & Heneberg [58] and equations from Dunbar [59]. A population is defined as all fossil crania from the same geographical site within a 50 000-year time period.