Hominim- Sahelanthropus tchadensis
7-6 mya Djurab Desert, Chad Key features: Skull and teeth Tiny brain Skull like an ape Huge brow ridge Lived in forest setting Non-honing chewing complex
Orrorin tugenensis
6 mya Tugen Hills, Kenya Post cranial bones found Femurs indicate bipedalism- curve Curved hand like ape
Ardipithecus Kadabba
Awash river valley, Ethiopia 5.8-5.6 mya Skull, teeth, postcranial bones found Small brain Perihoning complex Thin enamel Curved foot (climbing) Femur and pelvis adapted for bipedalism
Ardipithecus Ramidus
4.4 mya Awash river valley, Ethiopia Skull, teeth, post cranial bones found No perihoning complex on teeth Thin enamel Grasping toe Able to walk bipedally and climb trees
Australpithecus anamensis
4 mya Lake Turkana , Kenya Skull fragments, teeth Ape like teeth Ape like jaw Curved hand
Australpithecus platyops
3.5 mya Lomekwi , Kenya Flat face Small brain Split of australpithecines into two lines
Australpithecus afarensis “Lucy”
3.6-3 mya Hadar, Ethiopia Small brain Smaller canines Curved hands Bipedal No divergent big toe
Australpithecus Africanus
3-2mya South Africa Small brain Moderate teeth Non- curved hands
Australpithecus Garhi
2.5 mya Bouri, Ethiopia Small brain Larger teeth than Lucy Arm to leg ratio similar to humans Tool maker
Australpithecus Aethiopicus
2.5 mya Lake Turkana, Kenya Small brain Massive molars Robust skull with Sagittal crest
Austrapithecus sediba
2.0mya Malapa, South Africa Small brain Small teeth Non curved hands short fingers- precision grip Homo-like pelvis
Australpithecus Boisei
2.3mya-1.2 mya Tanzania and Kenya Small brain Massive molars Robust skull with sagittal crest
Australopithecus Robustus
2-1.5 mya South Africa Small brain Massive molars Robust skull with sagittal crest
Homo Habilus
Larger brain
Reduced chewing complex than robust australpithecines
Ancestor may be australpithecus garhi