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Human Origins Exam 2

TermDefinition
digenesis rapid burial, decompose, mineral replaces organic
Kamoya Kimeu Kenyan, work with Leakeys, found Turkana boy
stratum layer of sediment
stratigraphy study position of strata
law of superposition young on top of old
biostratigraphy same fossil in different locations means same age
C-14 half life of 6,000 years, most effective dating for 15-30,000 years
K/Ar half life of 1.3 billion, K decay into Ar in volcanic ash
relative dating use known dates to estimate
absolute dating directly test layer to get age range
Laetoli footprints Au. afarensis walk in west ash, 3.6 mya, direct proof of bipedalism
hominid modern greats apes and ancestors
hominin human ancestors
Lucy Au. afarensis, very complete, first to be older than 3 mya
Taung Child Au. africanus, first early hominin, Dart
facultative biped able to walk on 2 legs but not main mode
obligate biped have to walk on 2 legs
Raymond Dart found Taung Child
Oldowan Mode 1, chopper and flake
chopper sharpen one edge of rock
flake fall off of chopper, waste or tool?
hammerstone used to make chopper
Nariokotome/Turkana Boy found by Kimeu, 80% complete, teeth show 8 years old, potentially sick, Homo erectus
Java Man 1.6-1.8 mya, Homo erectus, Indonesia
Peking Man 800,000 years old, Zhoukoudian in north, potential fire use
Acheulean Mode 2, biface cleaver and hand axe
biface worked both sides, made symmetrical
lumper allow for more interspecies variation, less species
splitter variation divide into more species
interspecies between different
intraspecies within
Homo ergaster African Homo erectus
Dmanisi skulls Georgia, high variation in Homo erectus skulls found in predator cave
skull 5 skull in Dmanisi, brain only 550cc
Koobi Fora Kenya, 1.5 mya, too hot for wildfire
Wonderwerk S. Africa, 1 mya, too far back in cave to blow in
Gesher Benot Ya'aqov Israel, 800k, repeat fire same place, burned bones
Beeches Pit England, 415k, hand axe, repeat fire
Created by: user-1964138
 

 



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