I. Primate Heritage A. First primates were arboreal B. 3 major groups C. Apes: Gibbons D. Apes: Orangutans E. Apes: Gorillas F. Apes: Chimps G. Apes:

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Presentation transcript:

I. Primate Heritage A. First primates were arboreal B. 3 major groups C. Apes: Gibbons D. Apes: Orangutans E. Apes: Gorillas F. Apes: Chimps G. Apes: Humans II. Hominid Evolution A. family Hominidae B. The human branch C. Evolution of upright poster & bipedalism D. Larger brains & the genus Homo E. Origins of the wise man Topic 14 – Human Evolution

I. Primate Heritage A. First primates were arboreal – associated features that weve inherited. Topic 14 – Human Evolution

I. Primate Heritage B. 3 major groups Topic 14 – Human Evolution 1.Prosimians part 1: Lorises, lemurs lorises 10 cm

I. Primate Heritage B. 3 major groups Topic 14 – Human Evolution 1.Prosimians part 1: Lorises, lemurs lemurs 10 cm

I. Primate Heritage B. 3 major groups Topic 14 – Human Evolution 2. Prosimians part 2: Tarsiers 10 cm

I. Primate Heritage B. 3 major groups Topic 14 – Human Evolution 3. Anthropoids: monkeys, Gibbons, Orangutans, Gorillas, Chimps, Humans

Topic 14 – Human Evolution

I. Primate Heritage B. 3 major groups Topic 14 – Human Evolution 3. Anthropoids: Monkeys, Gibbons, Orangutans, Gorillas, Chimps, Humans New World Monkeys

I. Primate Heritage B. 3 major groups Topic 14 – Human Evolution 3. Anthropoids: Monkeys, Gibbons, Orangutans, Gorillas, Chimps, Humans Old World Monkeys baboons

I. Primate Heritage B. 3 major groups Topic 14 – Human Evolution 3. Anthropoids: Monkeys, Gibbons, Orangutans, Gorillas, Chimps, Humans Old World Monkeys baboons

I. Primate Heritage B. 3 major groups Topic 14 – Human Evolution 3. Anthropoids: Monkeys, Gibbons, Orangutans, Gorillas, Chimps, Humans Old World Monkeys mandrills

I. Primate Heritage A. First primates were arboreal B. 3 major groups C. Apes: Gibbons D. Apes: Orangutans E. Apes: Gorillas F. Apes: Chimps G. Apes: Humans II. Hominid Evolution A. family Hominidae B. The human branch C. Evolution of upright poster & bipedalism D. Larger brains & the genus Homo E. Origins of the wise man

F. Apes: Chimps 2 species, tropical Africa Sister group to humans. Similarities to humans: We share 97% of alleles w/ chimps. Many morphological features shared. They make and use tools (simple). They have sense of self. Omnivorous. Coddling babys, breast feeding. Ability to walk bipedally. Bonobos often have frontal sexual intercourse.

F. Apes: Chimps 2 species, tropical Africa Sister group to humans. Similarities to humans: We share 97% of alleles w/ chimps. Many morphological features shared. They make and use tools (simple). They have sense of self. Omnivorous. Coddling babys, breast feeding. Ability to walk bipedally. Bonobos often have frontal sexual intercourse.

F. Apes: Chimps 2 species, tropical Africa Sister group to humans. Similarities to humans: We share 97% of alleles w/ chimps. Many morphological features shared. They make and use tools (simple). They have sense of self. Omnivorous. Coddling babys, breast feeding. Ability to walk bipedally. Bonobos often have frontal sexual intercourse.

F. Apes: Chimps 2 species, tropical Africa Sister group to humans. Distinctions from Humans: Knuckle walking. Big toe has thumb-like dexterity. 50% time in trees (including sleeping). Thicker, denser body hair. Adults have more prominent brow ridge, snout. Greater sexual dimorphism (less so than in Gorillas.

I. Primate Heritage G. Apes #5: Humans (genus Homo) Extant species: Homo sapiens Extinct species (): Topic 14 – Human Evolution Homo habilis (Handy Man)Homo habilis Homo rudolfensis (Rudolf Man)Homo rudolfensis Homo ergaster (Working Man)Homo ergaster Homo erectus (Upright Man)Homo erectus Homo floresiensis (Flores Man discovered 2003)Homo floresiensisFlores Homo antecessor (Predecessor Man)Homo antecessor Homo heidelbergensis (Heidelberg Man)Homo heidelbergensis Homo neanderthalensis (Neanderthal Man)Homo neanderthalensis Homo rhodesiensis (Rhodesia Man)Homo rhodesiensis Homo cepranensis (Ceprano Man)Homo cepranensis Homo georgicus (Georgia Man)Homo georgicus Homo sapiens idaltu (elderly wise man discovered 1997)Homo sapiens idaltu

Topic 14 – Human Evolution -bipedal -much less hair -reduced sexual dimorphism -larger brain -shorter jaw, snout -speech -symbolic thought (not unique) -complex tools -habitat: variable -diet: variable I. Primate Heritage G. Apes #5: Humans (genus Homo)

II. Hominid Evolution A. Family Hominidae Hylobatidae (184) Pongo (2)Gorilla (2) Pan (2)Homo (1) SE AsiaSE Asia Topic 14 – Human Evolution Great Apes Lesser Apes White-cheeked gibbon

Topic 14 – Human Evolution 5-7 Ma II. Hominid Evolution B. The species on the human branch: hominids (includes several genera such as Homo, Australopithecus)

II. Hominid Evolution B. The species on the human branch: hominids Topic 14 – Human Evolution

II. Hominid Evolution C. Upright posture evolved before large brains Topic 14 – Human Evolution

II. Hominid Evolution C. Upright posture evolved before large brains Topic 14 – Human Evolution

II. Hominid Evolution C. Upright posture evolved before large brains Topic 14 – Human Evolution Opening in skull reveals upright posture

Topic 14 – Human Evolution II. Hominid Evolution C.Upright posture evolved before large brains Convergent big toe Position of inner toe reveals upright posture

Topic 14 – Human Evolution II. Hominid Evolution C.Upright posture evolved before large brains Convergent big toe -Tanzania -ca. 3.5 Ma -damp volcanic ash

Topic 14 – Human Evolution II. Hominid Evolution C.Upright posture evolved before large brains Convergent big toe -Tanzania -ca. 3.5 Ma -damp volcanic ash

Hylobatidae Pongo Gorilla Pan Homo Topic 14 – Human Evolution II. Hominid Evolution C.Upright posture evolved before large brains Convergent big toe Position of inner toe reveals upright posture

Topic 14 – Human Evolution II. Hominid Evolution C.Upright posture evolved before large brains Pelvis, spine curvature, knee joint all reveal bipedalism Lucy (Australopithecus afarensis)

Homo erectus Lucy (Australopithecus afarensis)

Australopithecus afarensis Homo erectus Homo sapiens

Topic 14 – Human Evolution II. Hominid Evolution D. Larger brains (tools) and reduced sexual dimorphism define the genus Homo ca. 1.8 Ma Often found with primitive stone tools (e.g. Olduvai Gorge, Tanzania; Lake Turkana, Kenya)

Topic 14 – Human Evolution 5-7 Ma II. Hominid Evolution D. Larger brains (tools) and reduced sexual dimorphism define the genus Homo Was Homo habilis the first to make tools?

Topic 14 – Human Evolution II. Hominid Evolution D. Larger brains (tools), reduced sexual dimorphism, & the genus Homo Ma -First Homo to leave Africa -First hunter / gatherers, rather than mere prey -Fire (ca. 500,000 – 300,000 ybp)? Peking man (H. erectus)

Homo heidelbergensis (Europe: ca. 300,000 ybp) Sometimes called H. sapiens archaic Topic 14 – Human Evolution II. Hominid Evolution D. Larger brains (tools), reduced sexual dimorphism, & the genus Homo

Homo neanderthalensis (Europe: 200,000-40,000 ybp) Formerly Homo sapiens subspecies neanderthalis Topic 14 – Human Evolution II. Hominid Evolution D. Larger brains (tools), reduced sexual dimorphism, & the genus Homo

Topic 14 – Human Evolution II. Hominid Evolution E. Origins of the wise-man, Homo sapiens Homo sapiens Defined by larger brain, forehead, and reduced brow ridge.

Topic 14 – Human Evolution II. Hominid Evolution E. Origins of the wise-man, Homo sapiens Two theories: 1)Multiregional hypothesis -modern humans evolved from different tribes of Homo erectus -Europeans, for example, came via H. erectus > H. neanderthalensis > H. sapiens 2) Replacement hypothesis -modern humans came from one tribe of Homo erectus and replace all other tribes. -Neanderthals, etc. thus were evolutionary dead ends

Topic 14 – Human Evolution II. Hominid Evolution E. Origins of the wise-man Two theories: 1)Multiregional hypothesis (multiple origins) 2)Replacement hypothesis (single origin) mongoloid negroid caucasoid Homo erectus H. sapiens skull is very distinctive

Topic 14 – Human Evolution II. Hominid Evolution E. Origins of the wise-man Two theories: 1)Multiregional hypothesis (multiple origins) 2)Replacement hypothesis (single origin) Homo erectus (1.6 Ma-200 Ka) H. sapiens fossil record Europe: H. heidelbergensis & H. neanderthalensis ( Ka) H. sapiens (195 Ka): E Africa H. sapiens (50 Ka): Asia, Europe H. sapiens (40 Ka): Australia H. sapiens (15 Ka): America

Topic 14 – Human Evolution II. Hominid Evolution E. Origins of the wise-man Two theories: 1)Multiregional hypothesis (multiple origins) 2)Replacement hypothesis (single origin) mongoloid negroid caucasoid H. sapiens mtDNA Europe: H. heidelbergensis & H. neanderthalensis ( Ka)