Anthro Ch 6

According to the model of human evolution in Ember and Ember, the presumed common ancestor of apes and modern humans lived about __________ million years ago.

6

Sahelanthropus tchadensis lived about __________ million years ago.

7

The tool tradition identified with Homo erectus is the __________.

Acheulian

The first definite hominid was __________.

Australopithecus

The Leakeys worked for almost 30 years at __________ before finding a hominid fossil, A. boisei.

Olduvai Gorge

Which of the following has evidence showing that it may have been a bipedal early hominid?

Orrorin tugenensis

Gracile australopithecines include all of the following except __________.

aethiopicus

Robust australopithecines include all of the following except __________.

africanus

Acheulian sites were usually located close to __________.

all of the above

What makes Ardipithecus ramidus unique is that it __________.

combined apelike dentition with bipedalism

Early Olduvai hominids __________.

exploited a wide range of animals

Generally, the greater the sexual dimorphism, the __________ the social dominance of males over females.

greater

The widening of the female pelvis is related to __________.

larger baby brains

Sexual dimorphism in Homo erectus is __________.

less than in earlier Australopithecine species

Anthropologist Donald Johanson found 40 percent of the skeleton of a female hominid at Hadar; he named it __________ after the Beatles song.

lucy

The fossil that Raymond Dart discovered was that of __________.

young child

The earliest Australopithecine species, anamensis, is dated to about __________ million years ago.

3.9-4.2

The earliest identifiable stone tools from East Africa date from about __________ million years ago.

2.5

The average size of the brain of Homo sapiens is _________ cc.

1300

Undisputed bipedal early hominids lived in __________ about 4 million years ago.

East Africa

The first hominid species to be widely distributed in the Old World was __________.

Homo erectus

A. anamensis has been found in several locations in __________.

Kenya

The famous footprints of Australopithecus were found at __________.

Laetoli