
| Australopithecus | Afarensis | 3.6-3 |
| A | Africanus | 2.5-3 |
| A | Africanus/Habilis | 2.5-3 |
| A | Boisei | 1.8 |
| A | Robustus | 1.5-2 |
| SAMPLE | HOW MANY |
MEAN CCs |
| Pan Troglodytes (Chimps.) | ||
| Male | 33 | 410 |
| Female | 78 | 380 |
| Pooled | 111 | 390 |
| Pongo Pygmaeus (Orang.) | ||
| Male | 30 | 415 |
| Female | 16 | 370 |
| Pooled | 48 | 400 |
| Gorilla Gorilla | ||
| Male | 63 | 550 |
| Female | 50 | 460 |
| Pooled | 113 | 510 |
| Homo Sapiens (Humans) | ||
| Male | 1317-1609 | |
| Female | 1181-1445 |