Chapter 10- The First Hominims Flashcards
1
Q
Hominim- Sahelanthropus tchadensis
A
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
2
Q
Orrorin tugenensis
A
6 mya Tugen Hills, Kenya Post cranial bones found Femurs indicate bipedalism- curve Curved hand like ape
3
Q
Ardipithecus Kadabba
A
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
4
Q
Ardipithecus Ramidus
A
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
5
Q
Australpithecus anamensis
A
4 mya Lake Turkana , Kenya Skull fragments, teeth Ape like teeth Ape like jaw Curved hand
6
Q
Australpithecus platyops
A
3.5 mya Lomekwi , Kenya Flat face Small brain Split of australpithecines into two lines
7
Q
Australpithecus afarensis “Lucy”
A
3.6-3 mya Hadar, Ethiopia Small brain Smaller canines Curved hands Bipedal No divergent big toe
8
Q
Australpithecus Africanus
A
3-2mya South Africa Small brain Moderate teeth Non- curved hands
9
Q
Australpithecus Garhi
A
2.5 mya Bouri, Ethiopia Small brain Larger teeth than Lucy Arm to leg ratio similar to humans Tool maker
10
Q
Australpithecus Aethiopicus
A
2.5 mya Lake Turkana, Kenya Small brain Massive molars Robust skull with Sagittal crest
11
Q
Austrapithecus sediba
A
2.0mya Malapa, South Africa Small brain Small teeth Non curved hands short fingers- precision grip Homo-like pelvis
12
Q
Australpithecus Boisei
A
2.3mya-1.2 mya Tanzania and Kenya Small brain Massive molars Robust skull with sagittal crest
13
Q
Australopithecus Robustus
A
2-1.5 mya South Africa Small brain Massive molars Robust skull with sagittal crest
14
Q
Homo Habilus
A
Larger brain
Reduced chewing complex than robust australpithecines
Ancestor may be australpithecus garhi
