Chapter 11 Flashcards

(27 cards)

0
Q

Homo erectus fossil that is almost 2 million years old found with Oldowan type tools best illustrates specimens found where?

A

Africa

Is the continent where Homo erectus originated.

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1
Q

Hammerstone

A

A stone used for striking cores to produce flakes or to break open the bones of large animals in order to extract the marrow. Olduwan tool industry.

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2
Q

What is the rational behind the proposal if the species Homo ergaster?

A

Some scientist believe there are enough differences between early African forms of H.erectus and other forms to propose that H.erectus should be split into two species: Homo erectus and Homo ergaster.

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3
Q

Fossils found in Dmanisi in the republic of Georgia are?

A

The Dmanisi hominins are very similar to early Homo erectus specimens found in Africa.

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4
Q

What is a difference between Acheulean tools such as hand axes and cleavers and Oldowen flakes?

A

Hand axes and cleavers hold a sharp edge longer than flakes.

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5
Q

Olduvai Hominid 7 is the type specimen for which species?

A

Homo habilis

Leakey, Tobias, and Napier named the new species Homo habilis after the Olduvai Hominid 7 fossil.

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6
Q

Which region did the earliest fossil evidence for Homo erectus come from?

A

Kenya

Koobi Fora

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7
Q

What best characterizes the Early Stone Age?

A

The use of both the Oldowan and Acheulean tool industries.

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8
Q

Why do some scientists argue that Homo habilis should be split into two separate species?

A

There is a great amount of variation in brain size among Homo habilis.

Others argue that this size difference is due to sex differences and not a separate species.

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9
Q

In which region of the world did H. erectus live most recently?

A

Southeast Asia

Until about 100,000 years ago.

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10
Q

Acheulean

A

Stone tool industry of the early and middle Pleistocene characterized by the presence of bifacial hand axes and cleavers.

This industry was made by a number of Homo species including H.erectus and H.sapiens

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11
Q

Angular totur

A

A thickened ridge of bone at the posterior angle of the parietal bone.

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12
Q

Calotte

A

The skullcap, or the bones of the skull.

Excluding bones of the face and base of cranium.

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13
Q

Calvaria

A

The braincase.

Included bones of the calotte and those that form the base of the cranium but excludes the bones of the face.

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14
Q

Canine fossa

A

An indentation on the maxilla above the root if the canine. Anatomical feature usually associated with modern humans that may be present in some archaic Homo species in Europe.

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15
Q

Cleaver

A

Acheulean bifacial tool. Oblong with broad cutting edge on one end.

16
Q

Early Stone Age or lower Paleolithic

A

The earliest stone tool industries including Oldowan and Acheulean industries.

17
Q

Flake

A

The stone fragment struck from a core. Thought to have been primary tools of Oldowan.

18
Q

Hand axe

A

Type of Acheulean bifacial tool. Tear drop shaped with long cutting edge.

19
Q

Metopic keel

A

Longitudinal ridge or thickening of bone along the midline of the frontal bone.

20
Q

Movius line

A

The separation between areas if the old world in which Acheulean technology occurs and those in which it does not.

21
Q

Oldowan

A

The tool industry characterized by simple, usually unifacial core and flake tools.

22
Q

Platycnemic

A

A bone that is flattened from side to side.

23
Q

Platymeric

A

A bone that is flattened from front to back.

24
Saggital keel
Longitudinal ridge or thickening of bone on the sagittal suture not associated with any muscle attachment.
25
Shovel-shaped incisors
Characteristic H.erectus feature. | Anterior teeth that on the lingual side are concave with two raised edges that make them look like tiny shovels.
26
Superorbital torus
Thickened ridge of bone above the eye orbits of the skull; a brow ridge. Thickening in H.erectus in order to strengthen the braincase as brain size increased.