science

Pongidae

Pongidae is a science 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 Pongidae rather than just read about it. In short: Pongidae , or the pongids is an obsolete primate taxon containing chimpanzees, gorillas and orangutans. By this definition pongids were also called "great apes".

Key takeaways

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

Reference excerpt

Pongidae , or the pongids is an obsolete primate taxon containing chimpanzees, gorillas and orangutans. By this definition pongids were also called "great apes". This taxon is not used today but is of historical significance. The great apes are currently classified as Hominidae. This entry addresses the old usage of pongid. The words "Pongidae" and "pongids" are sometimes used informally for the primate taxon containing orangutans and their extinct fossil relations. For this usage the currently most widely accepted name is Ponginae (or informally Asian hominids or pongines), the orangutan subfamily of the Hominidae or hominids. In current hominid taxonomy there is no “pongid” taxon. The orangutan taxon is now known to be paraphyletic to other (African) hominids. The orangutans are the only surviving species of the subfamily Ponginae, which genetically diverged from the other hominids (gorillas, chimpanzees and humans) between 19.3 and 15.7 million years ago. The subfamilies split somewhat later. The corresponding crown group for this taxon is Hominidae.

Distinction of great apes (formerly pongids) to hominins

Skull The great ape (formerly pongid) skull contains the following features that are absent or less pronounced in humans:

a sulcus behind the brow ridges prognathism a protruding occipital region large, bony eye sockets a large nasal opening constriction just behind the orbital region stout facial bones a diastema a simian shelf a larger, well pronounced brow ridge

Adaptations for locomotion The following great ape (formerly Pongid) adaptations are for arboreal and knuckle walking locomotion and are not found in humans:

Similarity to hominins The australopithecines show intermediate character states between great apes (formerly pongids) and humans, with Homo erectus (formerly Pithecanthropus) intermediate between australopithecines and humans. Members of the genus Homo share many key features with anatomically modern man.

See also Anoiapithecus Chororapithecus History of hominoid taxonomy Pierolapithecus Samburupithecus

References

Science and faith: The hominid fossil record

External links Pongidae - the Great Apes Family Brain endocast asymmetry in pongids

Illustrations

Worked examples

Example 1 — a first encounter with Pongidae

Start with the simplest possible case. Write down what Pongidae claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, 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 Pongidae 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 Pongidae 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 Pongidae

In research: Pongidae appears in science 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 Pongidae 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: Pongidae is common in secondary-school and first-year university syllabi. It links to neighbouring topics Apes, Obsolete primate taxa, Paraphyletic groups, so understanding it makes those chapters shorter.
In everyday life: Look for Pongidae 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 Pongidae in 20 minutes

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

Frequently asked questions

What is Pongidae in simple terms?

Pongidae , or the pongids is an obsolete primate taxon containing chimpanzees, gorillas and orangutans. By this definition pongids were also called "great apes".

Why does Pongidae matter?

Because it connects several science 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 Pongidae?

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 Pongidae.