| Primates |
| 2001" extras |
| Tarzan's ilk |
| Tarzan types |
| Tarzan's "kin |
| Tarzan et al. |
| Cave dwellers |
| Brawny fellers |
| Tarzan and kin |
| Missing links? |
| Early hominids |
| Early primates |
| Sci-fi figures |
| Pithecanthropi. |
| Sci-fi primates |
| Tarzan wannabes |
| Pithecanthropine |
| Knuckle draggers |
| Primitive fellows |
| Tarzan imitators? |
| Tarzan and others |
| Hypothetical links |
| Evolutionary links |
| Transitional figures |
| Hypothetical primates |
| Knuckle-dragging sorts |
| Extinct human ancestors |
| Links in the human chain |
| Bigfoot's kin, presumably |
| Early characters in "2001 |
| Halloween visitors, maybe |
| Stereotypical Stone Agers |
| Zaius and Honorious, e.g. |
| Theoretical missing links |
| Alleged evolutionary links |
| Missing links, so to speak |
| Hypothetical missing links |
| Ancestors in Darwin's theory |
| Ancestors from long, long ago |
| Our ancestors, hypothetically |
| The hypothetical humanzees, e.g. |