Anthropology: Evolution Of Humans

Who is this and why?

this is the Australopithecus afarensis because..

Small brain (400–500 cm³), short stature, long arms/curved fingers, human-like pelvis/legs.

Who is this and Why?

Homo habilis because

Larger brain (500–700 cm³), small teeth, human-like hands, long arms.

Who Is this and why?

Homo neanderthalensis because

Sophisticated stone tools, fire use, built shelters, used pigments/ornaments, cared for elderly/injured; interbred with Homo sapiens (leaving 1–2% DNA in non-Africans).

Who Is this and why?

Homo sapiens because

High rounded skull, large brain (~1,300 cm³), smaller face/teeth, prominent chin, slender body.

Order the phases from latest to earliest (most recent to oldest)

Homo sapiens – Homo neanderthalensis – Homo habilis – Australopithecus afarensis.

Order the phases from earliest to latest (oldest to most recent)

Australopithecus afarensis - Homo habilis - Homo neanderthalensis - Homo sapiens.

Which phase is the major turning point for migrating out of Africa for the first time?

Homo sapiens expanded globally, while Homo habilis stayed in Africa.

Time, Location and Key significance for Australopithecus afarensis

• Time & Location: 3.9–2.9 million years ago in East Africa (Ethiopia, Tanzania, Kenya).

• Key Fossil: "Lucy" (~3.2 million years old).

• Key Significance / Known For: Walked upright (bipedalism) while retaining climbing adaptations; proves bipedalism evolved millions of years before modern brain size.

Time, Location and Key significance for Homo Habilis

• Time & Location: 2.4–1.4 million years ago in Eastern and Southern Africa.

• Nickname: "Handyman."

• Key Significance / Known For: Associated with the earliest Oldowan stone tools (flakes, choppers); marks a significant increase in brain size and technological behavior.

Time, Location and Key significance for Homo neanderthalensis

Time & Location: 400,000–40,000 years ago in Europe and western Asia.

Key Significance / Known For: Sophisticated stone tools, fire use, built shelters, used pigments/ornaments, cared for elderly/injured;

Time, Location and Key significance for Homo Sapiens

• Time & Location: ~300,000 years ago to present; evolved in Africa, spread globally.

• Key Significance / Known For: Language, art, music, agriculture, and global spread; proves evolution is a branching tree, not a straight ladder.

Which phase is the major turning point for migrating out of Africa for the first time?

Homo sapiens expanded globally, while Homo habilis stayed in Africa.

How does Homo habilis differ from Australopithecus afarensis?

Homo habilis has a noticeably larger brain (500–700 cm³ vs. 400–500 cm³) and is directly associated with making the earliest stone tools (Oldowan).

How does Homo neanderthalensis differ from Homo sapiens?

Neanderthals had shorter, stockier, more powerful bodies adapted to cold climates and lacked the prominent modern chin and high rounded skull of Homo sapiens.

Which phase is shown by a skull with a prominent chin and high rounded skull?

Homo Sapiens

Which phase is shown by a robust, heavy-browed skull adapted to cold climates?

Homo neanderthalensis.

Which phase is shown by a small-brained skeleton with a mix of upright walking legs and climbing arms (like Lucy)?

Australopithecus afarensis.

who interbred with Homo sapiens (leaving 1–2% DNA in non-Africans).

Homo Neathendarals