Term
| Australopithecus anamensis |
|
Definition
4.2 – 3.9 mya
Kanappi & Allia Bay, Kenya
Derived traits
Thick enamel
More human-like molar
Lower limb indicates bipedalism |
|
|
Term
| Australopithecus afarensis |
|
Definition
4.0 – 2.9 mya
Hadar, Ethiopia
Laetoli, Tanzania (3.6 mya)
reduced canine |
|
|
Term
|
Definition
3.3 – 3.2 mya
Lake Turkana, Kenya
primitive & derived traits
Flatter face
Thick enamel |
|
|
Term
| Australopithecus africanus (South Africa) |
|
Definition
3.5 – 2.0 mya
Taung, South Africa
1st early hominid ever found
Found by Ramond Dart in
the 1920’s |
|
|
Term
|
Definition
2.5 mya
Similar to other australopithecines in many ways
Derived traits
Larger posterior dentition
Possible tool user
Possible sagittal crest
Cranial capacity 450 |
|
|
Term
|
Definition
5.8 – 4.4 mya
Ethiopia (East Africa)
Morphology of a toe bone suggests bipedalism |
|
|
Term
|
Definition
6 mya
Kenya (East Africa)
Internal architecture of the femur suggests bipedalism |
|
|
Term
|
Definition
7-6 mya
Chad (Central Africa)
Derived traits
Less prognathism
Brow ridges
Anteriorly and inferiorly placed foramen (hole) magnum (larger than normal) |
|
|
