Human Evolution

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Human Evolution by Mind Map: Human Evolution

1. 2. Australopithicines

1.1. Gracile

1.1.1. Belong to Australopithecus genus and have a lighter build (teeth, jaw)

1.1.2. A. afarensis Most well known australopithecine Lucy Most complete skeleton of any walking human ancestor 40% complete

1.1.3. Oldowan tools Used for butchering, woodworking, and cutting plants Broken intentionally to be sharp

1.1.4. Omnivorous

1.2. Robust

1.2.1. Heavier build in terms of teeth and jaw

1.2.2. Au. africanus Taung Child First australopithecine discovered 1924 South Africa, 2-3 million years ago

1.2.3. Hard seed and nut diet

2. 3. Evolution of Genus Homo

2.1. Characteristics

2.1.1. Increased brain size

2.1.2. Increased body size

2.1.3. Longer stride and shorter arms

2.1.4. Culture!

2.2. Brain Growth

2.2.1. Pros Problem solving skills increase Better communication Flexible in terms of behavior

2.2.2. Cons Higher energy requirements Difficult birth Increased parent investment due to slower development

2.3. Stone Tool Technology

2.3.1. Acheulian, more complex than Oldowan

2.3.2. Hand axes introduced

2.3.3. Wider variety of stones

3. 4. Archaic Humans

3.1. Earliest appearance was about 350,000 years ago

3.2. Large brain about 1100-1300 cc depending on region

3.3. Neandertals

3.3.1. Europe and Western Asia mainly

3.3.2. Increased brain size

3.3.3. Reduced tooth size

3.3.4. Less skeletal robustness

3.3.5. Culture May have buried their dead Evidence of flowers around Shanidar 4 burial

3.4. Bergmann's Rule

3.4.1. Larger mass found in colder environments

3.4.2. Smaller mass found in warmer environments

3.5. Allen's Rule

3.5.1. Shorter appendages found in colder environments

3.5.2. Longer appendages found in warmer environments

3.6. Late Archaic H. sapiens

3.6.1. Housing shelters

3.6.2. Use of fire

3.6.3. Accumulations of artifacts

4. 1. Early Hominins

4.1. Time Frame

4.1.1. About 6-8 mya

4.1.2. Universe in a year Big Bang: Jan 1 Hominins: Dec 31st 9:30 pm

4.2. Characteristics

4.2.1. Bipedal Double-arched foot Basin shaped pelvis Knee angled inward

4.2.2. Large Brain

4.2.3. Complex culture

4.2.4. Non-honing chewing