The Prehistoric World (to 3000 BC) Flashcards
Approximately how old is the earth?
~4.5 billion years old
How long ago did human ancestors split genetically from ape like ancestors?
5-6 million years ago
How long ago did anatomically modern humans (homo sapiens) appear?
~200,000 years ago
How did our earliest ancestors enter the Americas?
Land bridge across Bering straight
When is the there evidence of the very first settled villages?
~10,000 BCE
Describe the following for Australopithecenes (“southern Ape man”):
- Location
- Timeframe
- Characteristics
- Evidence
- Location: East Africa
- Timeframe: ~4.5 million years ago, among our earliest known ancestors
- Characteristics: bipedal, more erect posture
- Evidence: Laetrile footprints in Tanzania (volcanic eruption) and Lucy in Ethiopia 1975
Describe the following for Homo Habilis (“Handyman):
- Location
- Timeframe
- Characteristics
- Evidence
- Location: East Africa
- Time: 2.4-1.4 million years ago
- Characteristics: larger brains, more modern teeth/hands, use of stone tools, primitive speech, maybe slept in trees
- Evidence: Olduvai gorge Tanzania
Describe the following for Homo Erectus (“upright man”)
- Location
- Timeframe
- Characteristics
- Evidence
- Location: E Asia, Africa, Europe
- Timeframe: 2 million - 143 K years ago
- Characteristics: improved tools, use of fire, skilled hunters, lower-positioned larynx
- Evidence: Zhoukadian Cave in Beijing (“Peking Man”)
What are some unique features of Homo Heidelbergensus?
Among the first to make spears around 500,000 years ago in S Africa. Also possessed hyoid bone which facilitates speech.
Difference between Ape tool use and early human tool use?
Humans deliberately shaped tools, whereas apes just use natural tools like sticks and stones
What and when was Great Leap Forward? What examples accompanied it?
The era when humans seemed to have developed language/art of the kind we recognize today which occurred 40,000-50,000 years ago.
Language/art enabled our ancestors to pass on skills, traditions and discoveries which pave the way for complex societies
Examples include the cave art at Lascaux France.
Describe the Neanderthals (time, location, characteristics, evidence)?
- Aka Homo Neanderthalensis
- Time: 350,000 - 40,000 years ago
- Location: Africa, Europe, W Eurasia
- Characteristics: short robust build, powerful limbs, protruding face with heavy brow, used stone-tipped spears, dwelt in caves/rock shelters, care for the dead
- Evidence: Gotham’s cave on Gibraltar
Do we share a common ancestor with the Neanderthals?
No, according to DNA evidence. They did live alongside modern humans though.
What are Interglacials and why are they significant?
Periods in between Ice ages which allowed humans to migrate globally
When did the last ice begin and end?
Began ~2.5 million years ago and ended ~11,000 years ago.
What are some unique characteristics of modern humans - Homo Sapiens - which emerged around 200,000 years ago in Africa.
Taller, heavier, less protruding faces, larger than most previous species (smaller than Neanderthals), lower larynx, longer limbs, narrow pelvic girdle (longer gestation).
What are some archaeological sites where modern human fossils have been found?
Earliest: Omo in Ethiopia, dated to around 195,000 years ago.
Klasies river cave in S Africa dated to around 120,000 years ago
Where is the earliest known evidence of definitively decorated items? What is its significance?
Blombos cave in S Africa - red ochres engraved with geometric patterns, dated around 77,000 years ago.
These examples of art marked a shift into the upper Paleolithic period, in which Homo Sapiens population increased with remarkable migrations globally.
Who is mitochondrial eve?
Mitochondrial DNA is passed down from every mother to her offspring. All humans have a common ancestor, known as mitochondrial eve, and we all share at least some genetic information with her.