Chapter 10- The First Hominims Flashcards Preview

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Flashcards in Chapter 10- The First Hominims Deck (14)
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1

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

2

Orrorin tugenensis

6 mya
Tugen Hills, Kenya
Post cranial bones found
Femurs indicate bipedalism- curve
Curved hand like ape

3

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

4

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

5

Australpithecus anamensis

4 mya
Lake Turkana , Kenya
Skull fragments, teeth
Ape like teeth
Ape like jaw
Curved hand

6

Australpithecus platyops

3.5 mya
Lomekwi , Kenya
Flat face
Small brain
Split of australpithecines into two lines

7

Australpithecus afarensis “Lucy”

3.6-3 mya
Hadar, Ethiopia
Small brain
Smaller canines
Curved hands
Bipedal
No divergent big toe

8

Australpithecus Africanus

3-2mya
South Africa
Small brain
Moderate teeth
Non- curved hands

9

Australpithecus Garhi

2.5 mya
Bouri, Ethiopia
Small brain
Larger teeth than Lucy
Arm to leg ratio similar to humans
Tool maker

10

Australpithecus Aethiopicus

2.5 mya
Lake Turkana, Kenya
Small brain
Massive molars
Robust skull with Sagittal crest

11

Austrapithecus sediba

2.0mya
Malapa, South Africa
Small brain
Small teeth
Non curved hands
short fingers- precision grip
Homo-like pelvis

12

Australpithecus Boisei

2.3mya-1.2 mya
Tanzania and Kenya
Small brain
Massive molars
Robust skull with sagittal crest

13

Australopithecus Robustus

2-1.5 mya
South Africa
Small brain
Massive molars
Robust skull with sagittal crest

14

Homo Habilus

Larger brain
Reduced chewing complex than robust australpithecines
Ancestor may be australpithecus garhi