Table 1.
Brain and body size averaged for time periods and clades (data based on Henneberg and colleagues).
| Clade | Time span (k years BP) | Mean time (k years BP) | Mean br (cc) | Mean body (kg) |
|---|---|---|---|---|
| af | 3200–3246 | 3223 | 425.83 | 43.13 |
| aa | 2585–2622 | 2603 | 477.24 | 43.20 |
| hh | 1803–1855 | 1829 | 635.98 | 51.44 |
| he | 1612–1682 | 1647 | 882.11 | 49.50 |
| he | 1137–1250 | 1193 | 890.37 | 60.00 |
| he | 877–884 | 881 | 883.32 | 68.30 |
| ahs | 612–650 | 631 | 1224.66 | 52.80 |
| he | 323–400 | 362 | 1066.53 | 51.66 |
| n | 47–51 | 49 | 1496.50 | 60.00 |
| hs | 38–40 | 39 | 1471.22 | 66.25 |
Abbreviations: af, Australopithecus afarensis; aa, Australopithecus africanus; hh, Homo habilis; he, Homo erectus; ahs, archaic Homo sapiens; n, Neanderthal; hs, Homo sapiens.