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Human Evolution
Test 2 Part 5
19
Anthropology
Undergraduate 4
11/02/2011

Additional Anthropology Flashcards

 


 

Cards

Term
4 groups of hominins
Definition
1.the probable hominins
2.Gracile australopiths--Australopithicus
3.Robust australopiths
4.Homo Habilis
Term
Probable hominins
Definition
o sehalanthropus tchadensis (7-6 myrs)
o orrorin tugemensis (6-2)
o ardipithecus kadabba
o Ardipithecus ramidus
Term
Gracile australopiths--Australopithicus
Definition
• A. anamensis
• A. afarensis
• A. africanus
• A. sediba
• A. barelgazali
• Kenyapithecus platyops
Term
Robust australopiths
Definition
• Paranthropus
• Aethiopicus
• Boisei
• Robustus
Term
Homo Habilis
Definition
• Erectus
• Rudolfensis
• Sapiens
• Heidelburgensis
• Neandethalensis
Term
Major Sites of early hominins
Definition
• Eastern Africa (Kenya, Tanzania, ethipoia)
• South Africa
• One site in central Africa
Term
Ardipithecus Ramidus
Definition
• Big toe not inline
• Discovered in Ethiopia
• Thin tooth enamel
a foramen magnum in line with bipedalism
Term
A. anamensis
Definition
• Found in Kenya near lake turkana
• Very large thick canines.
• Parabolic arch
• Knocked knee creatures (standing on two legs)
• Flexability in elbow..so prolly chilled in trees occasionally
Term
A. Afarensis
Definition
• Found in Ethiopia and Tanzania
• 400 cc in brain size. Just a little bigger than chimps.
• Prognathic jaw which means its less flat.
• Parabolic arch.
• Reduced canines
• Post cranial
Long arms, short legs
Valgus knees (definitely bipedal at some point)
Long and curved from swinging in trees
Term
o A. africanus
Definition
• Larger brain (450-500cc)
• Forehead development-frontal cortex forming
• Prognathic face is reducing.
• Canines are heavily reduced.
• Big jaws
• Afarensis looking post cranial body
• Shape of hip is just like afarensis
Term
A. sediba (2-1.95 myrs)
Definition
• Flat face
• Possible forehead
• Broad shorter skull-possible homo?
• Found in Malapa
• Small teeth
• Flat thickly enameled
• Arms are long, tiny hands
• Two legged action
Term
Mosaic Evolution
Definition
evolution of characters at various rates both within and between species.
Hominid evolution: the early evolution of bipedalism in Australopithecines, and its modification of the pelvic girdle took place well before there was any significant change in the skull, or brain size.
Term
Australopithecus garhi
Definition
Ethiopia
• Found in same temporal deposits where there are some of the earliest stone tools
• 450 cc cranial capacity
• had fairly large molars with thick enamel
• femur is fairly long compared to humerus. Arms seems more ape like, which is weird cause humans don’t have that
Term
Kenyathropus platyops
Definition
Kenya
• got broad flat face.
• Small brain
• Thick enamel but the cheek teeth are small
Term
Paranthropus aethiopicus
Definition
o Primitive
• Several afarensis like traits
• Smallish brain- 400-450cc
• Prognathic snout (snout pulls forward)
• Compound temporonucal crest neck muscles
• Moderate sized incisors
o Derived
• Big sagittal crest
• Dish shaped midface
• Flaring zygomatic arches
• Frontal trigon (above brow ridge)
• Large molars
• Thick mandible
Term
Paranthropus Boizei
Definition
• Shares with p. aethiopicus
o Dish faced
o Flaring zygomatic
o Sagittal crest
o Large flat molars (largest ever recovered)
o Hyperrobust --megadont!
o Ate whatever he wants
• Small incisors
• Othronathic
• 530 cc brain size
• No temporonucal crest
Term
paranthropus robustus vs aus. africanus
Definition
• larger temporal fossa
• shorter snout
• sagittal crest (males only)
• face is hafted
• flatter forehead
• flatter face
• major differences are dietary
Term
paranthropus robustus
Definition
• not as robust as boziei
• flaring zygomatic arches
• frontal trigon
• 530 cc brain
• like boizei: orthonathic snout, small incisors, lack of compound temporonucal crest
• very big molar teeth
• tall jaw, meaning lots of power it can generate.
Term
Pliocene hominid systematics
Definition
• over time more diversity occurs
o possibly because less fossils. Haven’t been looking in earliest deposits.
o Evolution could have just diversified over time. Starting with only just one.
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