chapter 6 (human origins) Flashcards
what are Sahelanthropus tchadensis
oldest known species in human family tree
6-7 mya
bipedalism
foramen magnum at base if skull
what is v Ardipithecus ramidus
ardi fossil
bipedal living in forested environment
where were hominids focused?
south + east Africa
span of australopithecines?
4-1 mya
name the gracile australopithecines
A. anamnesis (4.2-4 Mya)
v – A. afarensis (3.6-3.0 Mya)
v – A. africanus (3.0-2.0 Mya)
robust review (dont have to memorize but look over)
Paranthropus aethiopicus (2.5 mya)
v – Paranthropus boisei (2.3-1.2 mya)
v – Paranthropus robustus (2.0-1.5 mya)
describe the lucy skeleton
Australopithecine
3.5 mya, bipedal, small, 40% of her skeleton retrieved, so bigger picture
• Small brained, bipedal
describe Australopithecus Afarensis and Australopithecus Africanus
ustralopithecus africanus was nearly identical in body and brain size to A. afarensis. Like A. afarensis, A. africanus also showed marked differences in size between males and females. … The pelvis is far more humanlike than apelike and is strong evidence that A. africanus was bipedal.
describe homo habilis
first classified as homo, 2.5 million mark- start of tool usage, increase in cranial capacity
still in africa
what tool tradition did homo habilis use?
oldwan tool tradition- associated with homo habilis, percussion flaking (banging together to make an edge)
describe pleistocene
The Pleistocene Epoch is typically defined as the time period that began about 2.6 million years ago and lasted until about 11,700 years ago. The most recent Ice Age occurred then, as glaciers covered huge parts of the planet Earth.
The Pleistocene Epoch is the first in which Homo sapiens evolved, and by the end of the epoch humans could be found in nearly every part of the planet. The Pleistocene Epoch was the first epoch in the Quaternary Period and the sixth in the Cenozoic Era. It was followed by the current stage, called the Holocene Epoch.
describe homo erectus
oldest specimen 1.8 mya Kenya,
v widest part of skull was bottom
v Left Africa
v Fossil recovered in dmanisi dated 1.77 mya (in africa, rest 1.8)
who is the nariokotome boy?
- would’ve grown to 6’8, most likely died bc of tooth infection. Found in lakebed so well preserved
homo erectus
describe java man
homo erectus
v Eugene dubois- found Java Man -severe thigh injury- calcified but lived long after
v Water craft - experimental archaeology
what is the paleolithic era?
v The period of human history where humans have created stone tools 2.5mya-10,000 years)
describe lower paleolithic and the hominids found during
2.5 mya - 200,000 yrs
v Homo Habilis, homo erectus, pre-modern Homo sapiens
describe middle paleolithic
200,000 yrs - 45000 yrs
v Homo sapiens, homo floresienisis
describe upper paleolithic
45,000 yrs - 10,000 yrs Davidson Black (Canadian anthropologist) • Wasnt the one who found all the fossils Pei Wenzhong (Chinese anthropologist) • DID do the work in finding fossils
what tool tradition did homo erectus use?
• Acheulean tool tradition- tear drop shape, utilized for millions of years, both sides altered. Takes 60 hits to make (10 times more than oldwan)
how do we know hominids were involved in creating fire? site?
- Fire: know humans are involved because of hearth
- Wonderwerk cave, SA: found hearth + layers of sediment that have not been disturbed for about a million years. Also had tools and evidence of bones
describe neandertals
- Did not necessarily come after other hominins but are recent.
- Premodern homo sapiens
- 300,000 years ago - 30,000 years ago
- Neandertal genome used to determine relation to humans (??)
- Depicted as brutish in art, looked more human than depicted
- Had little or no chin based on need for more space for teeth and connection to upper facial area.
- Different cranium bones - occipital bun
- Wider joints - more robust
neandertal sites
- Feldhofer cave
- Neander valley, Germany - original fossils found 1850s
- Sites in Europe and Asia
- Most sites found in cold regions of Europe
- Kebara cave, Israel
- Sanidar, Iraq- found lots of pollen and thought it might be a burial site where they used flowers, but later discredited bc found pollen everywhere. Found skeletal evidence of an individual with an eye injury bc of a fractured cranium, arm amputation, and a foot with arthritis
- La Chapelle-aux-Saints
- Original Neanderthal drawings based on scientific analysis of this individual (was old)
why do we have the neandertal dna
- We have the Neanderthal genome. Humans have it bc of interbreeding.
- Homo neanderthalensis or homo sapiens neanderthalensis
- Gene for red hair (mutation) so they may have had red hair
describe neandertal art
- Very little indication of art
- 8 lines cut into rock
- 40,000 yrs ago
- Gibraltar
- Feathers +bones (especially wings) evidence of cut marks