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Selam (Australopithecus)

Selam (Australopithecus) is a biology topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Selam (Australopithecus) rather than just read about it. In short: Selam (DIK-1/1) is the fossilized skull and other skeletal remains of a three-year-old Australopithecus afarensis female hominin, whose bones were first found in Dikika, in the Afar Region of northeastern Ethiopia in 2000 and recovered over the following years. Although she has often been nicknamed Lucy's baby, the specimen has been dated at 3.3 million years ago, approximately 100,000 years older than "Lucy" (dated…

Selam (Australopithecus) — main illustration
Selam (Australopithecus) — illustration

Key takeaways

  • Selam (Australopithecus) belongs to biology; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Selam (Australopithecus) to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Selam (Australopithecus) from memory before moving on to harder problems.

Reference excerpt

Selam (DIK-1/1) is the fossilized skull and other skeletal remains of a three-year-old Australopithecus afarensis female hominin, whose bones were first found in Dikika, in the Afar Region of northeastern Ethiopia in 2000 and recovered over the following years. Although she has often been nicknamed Lucy's baby, the specimen has been dated at 3.3 million years ago, approximately 100,000 years older than "Lucy" (dated to about 3.2 million years ago). Selam is also known as the Dikika Child. The word "Selam" means "peace" in Amharic.

Discovery The fossils were discovered by Zeresenay Alemseged, and are remarkable for their age and condition. On 20 September 2006, the journal Nature presented the findings of a dig in Dikika, Ethiopia, a few miles south of Hadar, the well-known site where the fossil hominin known as Lucy was found. The recovered skeleton comprises almost the entire skull and torso and many parts of the limbs. The features of the skeleton suggest adaptation to walking upright (bipedalism) as well as tree-climbing, features that correspond well with the skeletal features of Lucy and other specimens of Australopithecus afarensis from Ethiopia and Tanzania. CT-scans of the skull show small canine teeth forming, indicating the specimen is female. "Lucy's Baby" has officially been named "Selam" (ሰላም, meaning "peace"). The name was published at the announcement of the discovery at the National Museum of Ethiopia in Addis Ababa. As part of Ethiopia's Millennium celebration a commemorative gold coin was minted and given to visiting government officials during the celebration year. Following is an abstract of the original article describing the baby "Selam", which was authored by Zeresenay Alemseged, Fred Spoor, William H. Kimbel, René Bobe, Denis Geraads, Denné Reed and Jonathan G. Wynn.

Understanding changes in ontogenetic development is central to the study of human evolution. With the exception of Neanderthals, the growth patterns of fossil hominins have not been studied comprehensively because the fossil record currently lacks specimens that document both cranial and postcranial development at young ontogenetic stages. Here we describe a well-preserved 3.3-million-year-old juvenile partial skeleton of Australopithecus afarensis discovered in the Dikika research area of Ethiopia. The skull of the approximately three-year-old presumed female shows that most features diagnostic of the species are evident even at this early stage of development. The find includes many previously unknown skeletal elements from the Pliocene hominin record, including a hyoid bone that has a typical African ape [hominid] morphology. The foot and other evidence from the lower limb provide clear evidence for bipedal locomotion, but the gorilla-like scapula and long and curved manual phalanges raise new questions about the importance of arboreal behaviour in the A. afarensis

A lifelike image of Selam was published on the cover of the November 2006 issue of National Geographic. A 2018 examination by DeSilva et al. in Science Advances concluded the hallux of the foot was evidence of hallucal grasping and tree climbing, with an ape-like low and perhaps flat arch of the foot.

Exhibitions In August 2025, Selam, along with Lucy, was transported to the Czech Republic for a two-month exhibition at the Czech National Museum in Prague.

Evolution Many paleoanthropologists propose that the Homo line derives from A. africanus; in this view it might be better to place Selam in the A. africanus line, since it has more human traits than most A. afarensis (see Homininae).

Implications Examination of the shoulder blade and arms of this specimen has lent support to the idea that Australopithecus afarensis climbed extensively.

See also

References

External links BBC News: "Lucy's Baby" Found in Ethiopia Cosmos Magazine: 'Lucy's baby' rattles human evolution [1], Smithsonian Institution's Human Origins program

Illustrations

Selam (Australopithecus) illustration
Selam (Australopithecus): DIK-1-1 skeleton; notice the diverging left big toe bone
DIK-1-1 skeleton; notice the diverging left big toe bone
Selam (Australopithecus): Selam (Australopithecus afarensis) model at California Academy of Sciences
Selam (Australopithecus afarensis) model at California Academy of Sciences

Worked examples

Example 1 — a first encounter with Selam (Australopithecus)

Start with the simplest possible case. Write down what Selam (Australopithecus) claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In biology, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Selam (Australopithecus) before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Selam (Australopithecus) ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Selam (Australopithecus)

In research
Selam (Australopithecus) appears in biology research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Selam (Australopithecus) in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Selam (Australopithecus) is common in secondary-school and first-year university syllabi. It links to neighbouring topics 2000 in paleontology, Australopithecus fossils, Neogene fossil record, so understanding it makes those chapters shorter.
In everyday life
Look for Selam (Australopithecus) outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
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How to study Selam (Australopithecus) in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Selam (Australopithecus) means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Selam (Australopithecus) out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Selam (Australopithecus) in simple terms?

Selam (DIK-1/1) is the fossilized skull and other skeletal remains of a three-year-old Australopithecus afarensis female hominin, whose bones were first found in Dikika, in the Afar Region of northeastern Ethiopia in 2000 and recovered over the following years. Although she has often been nicknamed…

Why does Selam (Australopithecus) matter?

Because it connects several biology ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Selam (Australopithecus)?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Selam (Australopithecus).

Tags

  • 2000 in paleontology
  • Australopithecus fossils
  • Neogene fossil record
  • Paleontology in Ethiopia
  • Prehistoric Afar Triangle

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