Exam 2 Flashcards
Absolute Dating Methods
Obsidian hydration
Dendrochronology
Radiocarbon
Thermoluminescence (TL)
Obsidian hydration
Based on cumulative absorption of water by volcanic glass
dendrochronology
tree-ring dating
based on annual growth of rings in trees
Radiocarbon Dating
based on principle of radioactive decay
accelerator mass spectrometer (AMS) dating
Method used to count individual C-14 atoms by measuring their weight
Thermoluminescence dating
the light or glow that a material produces when heated
Hominoidea
taxonomic group that includes apes and humans
first primates existed
65 mya
earliest hominoids appeared
25 mya
early humans diverged from chimpanzees
6-5 mya
australopithecine
Various species of the genus Australopithecus, including A. ramidus, A. afarensis, and A. africanus
4 mya
locomotion
method of animal movement
bipedalism
using two feet for locomotion
Hadar Site Discoveries
discovery of Lucy in 1974
3.2 million year old australopithecus
discovery of the “first family”
3.2 million year old
5 adults and 2 children
first indicator that we are social creatures
Discovery of first intact afarensis skull-1994
around 3 million years old
male skull
Laetoli Site Discoveries
earliest evidence of bipedalism
discovered in 1976
around 3.6 million years old-volcanic eruption covered area with volcanic ash
70 or so human footprints, made by 3 individuals
Paranthropus Site Discoveries
period referred to as Pilo-Pleistocene around 3.1 million years ago
A.afarensis split into two separate lineages
Homo Habilis
2-1.5 mya-major evolutionary changes occurred
earliest evidence of stone tools
Olduvai Gorge (Important site)
2 mya-site was a large lake and wetland area surrounded by volcanic mountains and uplands
first evidence of stone tools
Oldowan stone tools
evidence of butchery and scavenging
Oldowan Stone tools
3 mya-1.2 mya
choppers and cobbles
Homo Erectus
Evolved from H. Habilis around 1.95 mya in Africa
First fully Bipedal species
1st appearance of hand-axes and other bifacial tools
The first to migrate out of Africa
Homo Sapiens
fossil remains from Morocco around 300 thousand years ago (kya)
we are homo sapiens
Blombos Cave (important site)
middle stone age deposits around 100 kya
behavioral evolution of anatomically modern humans (AMHs)
Who were the first species to migrate out of Africa?
Homo Erectus
Homo Erectus-Out Of Africa
evolved from Homo Habilis in Africa around 2 mya
beginning of the Pleistocene
Spread to Asia and Europe
Homo Erectus-Migration into Asia important sites
Dmanisi
Longgupo
Dmanisi Site
In Georgia
oldest site outside Africa with human skeletal remains around 1.95 mya
at least 6 individuals
remains appear to be transitional between H. Habilis and H. Erectus
Longgupo Site
in south central china
Homo Erectus-migrations into Europe
earliest evidence of human occupation around .13 mya
colder climate-likely delayed human settlement
Atapuerca H. Erectus Site
cavernous region in northern spain
middle, lower and upper paleolithic
Sima del Elefante H. eretus site
around 1.3 mya H. erectus remains, stone tools, and animal bones with cut-marks
oldest human remains and stone tool assemblages in Europe
Sima de los Huesos (“pit of bones”) H. erectus site
around 500 kya
skletal remains from 32 individuals
good example of group living during Lower Paleolithic
showed intentional burial of the dead-one and was one of the first examples of intentional human burial
Shoningen H. erectus site
site in germany
around 500-400 kya spear
numerous animal bones
stone tools made of chert-scrappers and projectile points
wooden artifacts
Homo Erectus-Global Migrations
appeared in africa around 2 mya
migrated to asia around 1.9 mya and europe around 1mya
invented hand axe and clothing
pioneered controlled use of fire around 1 mya
what helped homo erectus distinguish themselves from other species?
the invention of clothing
when did Homo Sapiens originate?
around 765 kya-550 kya
what did homo sapiens evolve from?
homo erectus
what did neanderthals evolve from?
homo erectus
neanderthals
survived in parts of eurasia from around 300 kya-40kya
short, stocky, robust skeletons
large game hunters
intentional burial in graves
beginning of artistic expression
lived in one of the most harsh climates
very adaptable
what large game did neanderthals hunt?
red deer
wild horse
wild cattle
where do we see the beginning of artistic expression?
neanderthals
who lived in one of the most harsh climates?
neanderthals
when neanderthals went extinct what replaces them?
Anatomically Modern Humans (AMHs)
when did neanderthals go extinct?
around 40 kya
Qafzh Cave-AMH site
AMH found in layers with Mousterian tools around 90 kya
Shanidar and Kebara-Neanderthal site
remains around 75 kta-45 kya found
DNA Analysis
Studied to identify genetic differences, time at which specific groups of people diverged into separate populations, and evolution of Anatomically Modern Humans (AMH)
Modern DNA
extracted from living populations