anthropology
Australopithecus platyops
existed with afarensis flat face
hunting tool hypothesis
hominins needed to free hands for tool use bipedalism happened before tool use
Ardipithecus kadabba/ ramidus
perihoning --> link between apes and hominids (kadabba)
Bipedal characteristics
used to walk upright on two limbs -foramen magnum at the base of the skull -modified pelvis and knee -weight-bearing foot -elongated lower limbs relative to front limbs
nonhoning chewing
wear on tips of canine grinding instead of slicing more pressure on molars Refers to the way the mouth processes food
Australopithecus garhi
2.5 mya east africa believed to be direct ancestor of homo ratio of arm and leg length is more human like
Sahelanthropus tchadensis
Central Africa desert 350 cc earliest preaustralopithcine found with bipedalism
Did bipedal locomotion or larger brain size happen first in evolution?
bipedal
What defines a hominid
bipedal locomotive and nonhonding chewing
"ardi"
Ardipithecus ramidus skull similar to ape mouth similar to hominin wide pelvis primitive hominin
Australopithecus afarensis
3.6-3mys 400-500cc east africa Lucy lived in multiple environments nondiverging big toe
Australopithecus anamensis
400-500cc east africa oldest Australopithecus kenya large canines
Australopithecus africanus
450cc South Africa little foot
Australopithecus sediba
450cc South Africa open land grass habit
Orrorin tugenesis
6mya Kenya
PRE - AUSTRALOPITHECINE
7 - 4 mya Central and East Africa