| A | B |
|---|
| Paleoanthropolgists | Scientists who study fossil evidence of human evolution. |
| Hominids | Humans and their immediate ancestors. |
| Pelvis | Hipbones. |
| Primates | A member of the order Primates, the mammalian order that includes humans. |
| Anthropoid primates | Marmosets, monkeys, apes, and humans. |
| Prosimian primates | Lemurs, lorises, and tarsiers. |
| Prehensile | Grasping. |
| Opposable thumb | A thumb that can be positioned opposite of the other fingers. |
| Dental formula | Number and arrangement of the teeth. |
| Great apes | Gibbons, orangutans, gorillas, and chimpanzees. |
| Bipedalism | The ability to walk primarily on two legs. |
| Quadrupedal | Walking on four limbs. |
| Lucy | A female Australopithecus fossil. |
| Australopithecines | Organisms from the genus Australopithecus. |
| Multiregional hypothesis | Suggests that region differences in phenotype have been developing for well over amillion years. |
| Recent-African-origin hypothesis | States that modern Homo sapiens originated in Africa only about 100,000 -200,000 years ago and then left Africa. |
