human evolution
DESCRIPTION
Human Evolution. Alan Morales, M.Ed., ATC, LAT. modern human. modern chimp. A. afarensis "Lucy". Primates Lab. Homo sapien, sapien (Aboriginal human) Bonobo Homo ergaster (1.8 mya) Homo ergaster (boy) Homo floriesnesis Homo neanderthal Chimpanzee (male) - PowerPoint PPT PresentationTRANSCRIPT
Alan Morales, M.Ed., ATC, LAT
Human Evolution
Primates LabA. Homo sapien, sapien (Aboriginal human)
B. Bonobo
C. Homo ergaster (1.8 mya)
D. Homo ergaster (boy)
E. Homo floriesnesis
F. Homo neanderthal
G. Chimpanzee (male)
H. Australopithecus afarensis (Lucy)
I. Homo sapien, sapien (12 month old)
J. Chimpanzee (12 month old)
K. Homo sapien, sapien (Cro-Magnon)
L. Homo sapien, sapien (Ancestral )
Lab Answers
1. Known Human2. Model A3. Model I4. Model K5. Model L6. Model F7. Model D
8. Model C9. Model E10. Model H11. Model B12. Model G13. Model J14. Known Gorilla
OverviewEvolution of PrimatesEvolution of HominidsFocus on HomoHuman VariationHumans as a selective agent
CLASSIFICATION OF HOMO
Early Primates
Prosimians (~58mya)
Monkeys (35mya)Apes (23mya)Hominids (~6mya)
Two main groups of primates:
1. Strepsirrhines (wet-nosed primates)Prosimians – lemurs, lorises, pottos & tarsiers
2. Haplorhines (dry-nosed primates)Anthropoids – monkeys, apes and humans
TarsiersTarsiersLemursLemurs
LorisPottos
ProsimiansProsimians
HAPLORHINES
1. Old World Monkeys:
2. New World monkeys
3. Apes
New World Monkey:
Flat face
Wide nostrils
Prehensile tail
Old World Monkey:
Long snout
Close nostrils
Non-prehensile tail
HAPLORHINES3. Apes• Lesser Apes• Gibbons
• Great Apes• Orangutans,
Gorilla, Chimpanzees, and Humans
Primate CharacteristicsBinocular visionWell-developed cerebrumLong fingers & toesArms that can rotate around shoulder joint
Upright posture
Binocular Color Vision
Primate Hands
Mobile LimbsMost primates have flat nails as well as
sensitive pads on the undersides of fingers and toes.Many also have both an opposable big toe
and thumb.Mobile limbs and clawless opposable digits
allow primates to freely grasp and release tree limbs.
Expanded brain capacitySocial behaviorsIntelligences
Other important featuresUpright posture.
Human and Gorrilla Comparison
Hominid Evolutionary Tree
Sequence of Human EvolutionOne of several possibilities
Common ancestor
Homo sapiens
Modern apes
Australopithecus afarensis
Australopithecus africanus
Homo habilis
Homo erectus
Homo neanderthalensis
Intermission
CLASSIFICATION OF Homo Sapiens
Pre-hominid (Hominin) Evolution
Reconstruction of Australopithecine
Ardipithecus ramidus 4.4 - ? mya
A. anamensis 4.2 - 3.9
A. afarensis 4.2 - 2.5
A. bahrelghazali 3.5 - 3.0
A. africanus 3.5 - 2.5
P. aethiopicus 2.7 - 2.3
A. garhi 2.5 - ?
P. boisei 2.3 - 1.3
P. robustus 2.0 - 1.0
BipedalismToolsLanguage
Hominid Evolution
Homo habilis (2.0 – 1.6mya)
H. rudolfensis (2.4-1.6mya)
H. erectus (1.9-27kyBP)
H. heidelbergensis (800-
100kyBP)
H. neanderthalensis (300-
30kyBP)
H. sapiens (130kyBP – present)
Sca
le:
Mill
ions
of
Years
BP
Evolution Human Origination
Out of Africa Theory
East Africa Rift Valley
Map of Australopithecine Finds
Map of Australopithecus sites in Africa, with a focus on the East African rift valley and limestone caves of South Africa.
Hominid Migitration
Sahelanthropus tchadensis
6 to 7 million years ago
Flat face like HomoCranial capacity about
the same as a chimpWalked uprightSahelanthropus tchad
ensis Video
HominidsBetween 7 and 6 million years agoHominid family (modern humans)
Bipedal upright (two-foot, locomotion)Developed opposable thumbs adapted for
grasping.Developed large brains.
Chimpanzees- 280 to 450 cubic centimeters.Homo sapiens-1200 to 1600 cubic centimeters!
To be Genus: HomoHomo erectus, Australopithecus,& Homo Sapien
Standard Primate Characteristics: upright, bipedal
posture much expanded
brain Opposable thumb
well defined sexual gender
extended childhood
language society culture
Human Ancestors
Human Evolution
A. afarensis
A. africanus
A. boisei
A. robustus
““LucyLucy” ” Australopithecus afarensisAustralopithecus afarensis
Pronouncation
An Example of Mosaic Evolution
Australopithecus africanusPronouncation
2.8 million years agoCranial capacity 460
cc
Homo habilisPronouncation
•Brain~600cc
•“Handy Man”
•Olduwan tools
•Speech?
•2-1.5 mya
Oldowan Tools
Homo ErgasterFirst MigratersAveraged brain size
1000 ccAbout 1.8-1.3 mya
Homo erectus“Upright Man”Larger brain than H. habilis
1.8 mya-400,000 years ago
MigratedUsed fireAcheulean toolsMore advanced culture?
Homo erectus
Trends in Skull Development
Hominid BrainsHominid Brains
NeanderthalsNeanderthal (H.
neanderthalensis) were first discovered in Germany’s Neander Valley.
300,00-200,000 years ago
What happened to Neandertals?
Coexisted w/H. sapiens for up
to 60,000 years.
Interbred?
Killed off?
Outcompeted?
Neanderthal Man
Science, Nov 19, 2004
Homo sapiens
Archaic – 100,000 to 35,000 yearsAlso called Homo sapiens
and Homo sapiens neanderthalensis
Modern – 35,000 years to presentModern human speciesHomo sapiens sapiens
Cro-MagnonsOldest fossils to be designated H. sapiens.Modern humans who entered Asia and
Europe from Africa 100,000 years ago.Aurignacian tools.Accomplished hunters.Language.
Cro-Magnon Man
Cro-Magnon Cro-Magnon humanshumans 1,600 cc 1,600 cc
cranial cranial capacitycapacity
NotNot a different a different species, just species, just old old Homo Homo sapienssapiens from from EuropeEurope
Artist’s reconstruction of a Cro-Magnon man
Sequence of Human EvolutionOne of several possibilities
Common ancestor
Homo sapiens
Modern apes
Australopithecus afarensis
Australopithecus africanus
Homo habilis
Homo erectus
Homo neanderthalensis
Human VariationResponses to the environment:• Bergmann’s Rule: states that of
larger size humans are found in colder environments, and smaller size are found in warmer regions.
• Allen’s Rule: states that humans from colder climates usually have shorter limbs than the equivalent human warmer climates.
Human Evolution Review
1. In hominoids, the foramen magnum is more centrally located in human skulls than in chimpanzee.
1 2
0%0%
1. True 2. False
2. Did Neanderthal and Homo Sapiens livded sided by sided for around 50,000 years?
1 2
0%0%
1. True2. False
3. In hominoids, human have a more of a box-shaped dental arcade (teeth set-up) than gorillas.
1 2
0%0%
1. True2. False
4. The sagittal ridge is more pronounced in gorillas than in homo erectus species
1 2
0%0%
1. True2. False
5. The browridge in gorillas is much more pronounced than the browridge in Austrolipothesis africanus.
1 2
0%0%
1. True2. False
6. The facial slope in chimpanzee is lesser than humans.
1 2
0%0%
1. True2. False
7. What region of the world is considered the “Cradle of Humanity”?
1 2 3 4
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1. Americas2. Africa3. Europe4. Asia
8. Which of the following primates appeared on the planet Earth about 6 mya?
1 2 3 4
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1. Prosimians2. Monkeys3. Apes4. Hominids
9. __________ is considered the earliest primates which included lemurs, lories, and tarsiers
1 2 3 4
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1. Prosimians2. Anthropoids3. Apes4. Fishes
10. The characteristics for primates are binocular vision, well-developed brain, long fingers & toes and arms that can rotate around the shoulder joint.
1 2
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1. True 2. False
11. Primates having long fingers & toes with opposable big toe & thumbs is not a major characteristic in their evolution.
1 2
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1. True 2. False
12. Characteristics of the body (i.e. skull) had nothing to do with hominids being upright posture and bipedal.
1 2
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1. True2. False
13. Human are direct descent from apes and monkeys.
1 2
0%0%
1. True2. False
14. Hominid evolutionary tree illustrates a linear relationship with lemurs, Old World monkeys, and gorillas.
1 2
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1. True 2. False
15. One of the several possible sequence of human evolution is:
1 2 3 4
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1. A. ararensis, A. africanus, H. habilis, H. erectus, and H, sapiens
2. A. ararensis, A. africanus, H. habilis, H. erectus, and H. neanderthal
3. A. ararensis, A. africanus, H. habilis, H. erectus, H. neanderthal, and H. sapiens
4. A. ararensis, A. africanus, and H. sapiens
16. Which of the Homo species was considered “Handy Man” because their were the first species to use tools?
1 2 3 4
0% 0%0%0%
1. H. habalis2. H. erectus3. H. Neanderthal4. H. sapien
17. Which of the Homo species is credit with migrating away from Africa to other parts of the planet?
1 2 3 4
0% 0%0%0%
1. H. habalis2. H. erectus3. H. Neanderthal4. H. sapien
18. Which of the Homo species was believed to become extinct due to interbreeding with Homo sapiens, killed off, and outcompeted for resources?
1 2 3 4
0% 0%0%0%
1. H. habalis2. H. erectus3. H. Neanderthal4. H. sapien
19. When examining earlier Homo sapiens skull with modern Homo sapiens skull, the examiner will notice the forehead in the earlier Homo sapiens is more angular.
1 2
0%0%
1. True2. False
20. Which of the Homo species is considered “Upright Man” because they stood upright?
1 2 3 4
0% 0%0%0%
1. H. habalis2. H. erectus3. H. Neanderthal4. H. sapien
21. Lucy was the first hominid fossil discovered . What is her scientific name?
1 2 3 4
0% 0%0%0%
1. H. habalis2. H. erectus3. A. ararensis 4. A. africanus
22. Which language is scientific name and/or terms based on?
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1. Russian2. French3. English4. Latin
23. The two hypothesis that explain how modern Homo sapiens might have evolved from other genus of Homo is
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1. Out of Africa and Multiregional model
2. Multiregional & Out of Asia model
3. Single Regional & out of Africa model
4. Out of Asia & Single Regional model
24. What was the importance of bipedal locomotion that evolved in the hominids family?
1 2 3 4
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1. Can reach higher
2. Can swim3. Can make and
use tools more efficiently
4. No major importance
25. Humans are classified in which of the following primate groups?
1 2 3 4
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1. Anthropoids2. Arthropods3. Prosimians4. Echinoderms
26. Chromosomal evidence indicated that gorillas and humans are related to each other.
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1. True2. False
27. What is not an adaptations that are shared by primates?
1 2 3 4
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1. Binocular vision2. Relatively long
fingers & toes3. Well-developed
brain4. Ability to talk
28. Which primates includes lemurs and bush babies?
1 2 3 4
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1. Anthropoids2. Arthropods3. Prosimians4. Echinoderms
29. Homo Habilis was found with tools of ____________.
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1. Stone & bone2. Metal3. Aluminum4. Skin
30. Which of the Homo species has the largest brain with a cranium capacity of 1400 cc?
1 2 3 4
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1. H. habalis2. H. erectus3. A. africanus4. H. sapien
31. How many hominid species exist today?
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1. One2. Two3. Nine4. Twelve
32. How confident do you feel explaining human evolution?
1 2 3 4
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1. Very confident2. Somewhat
confident3. Little confident4. No confident
33. Since the beginning of this unit, how much confidence do you feel explaining human evolution?
1 2 3 4
0% 0%0%0%
1. Very confident2. Somewhat
confident3. Little confident4. No confident
34. What grade will you get on this test?
1 2 3 4 5
0% 0% 0%0%0%
1. A2. B3. C4. D5. F