biology

Pilbaria

Pilbaria 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 Pilbaria rather than just read about it. In short: Pilbaria is a genus of fossil stromatolite-forming cyanobacteria from the Paleoproterozoic era 2.3 to 1.7 billion years ago. It is named after the Pilbara region of Western Australia where the type specimen was found.

Key takeaways

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

Reference excerpt

Pilbaria is a genus of fossil stromatolite-forming cyanobacteria from the Paleoproterozoic era 2.3 to 1.7 billion years ago. It is named after the Pilbara region of Western Australia where the type specimen was found.

Description The type species, Pilbaria perplexa is characterised by long, mostly straight, subparallel and mostly smooth columns with proportionately small transversely elongate niches with projections. Near the bases of beds, branching varies from parallel to markedly divergent, but above that level, it is α-β-parallel or slightly divergent. Laminae are predominantly steeply convex and form a patchy wall. Pilbaria is similar to Inzeria and Nordia in that it has well-developed niches and projections.

Distribution and age Fossils of P. perplexa, the type species, have been found in the Wyloo Group of the Pilbara region in Western Australia, aged 1.7 to 2 billion years old. It has also been found in the Epworth Group of the Coronation and Pine Creek Geosynclines in Canada, aged 1.865 to 2.2 and 2 to 2.3 billion years old. P. boetsapia and P. inzeriaformis are from Schmidtsdrift Formation of the Northern Cape Province in South Africa, aged approximately 2.2 billion years old. P. deverella is from the Yelma and Frere formations of the Earaheedy Group of the Nabberu Basin in Western Australia. It is the youngest of the four species, with fossils from these areas aged to about 1.7 billion years old. Other stromatolite genera found in the Yelma formation include Ephyaltes, Externia, Murgurra and Yelma.

Worked examples

Example 1 — a first encounter with Pilbaria

Start with the simplest possible case. Write down what Pilbaria 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 Pilbaria 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 Pilbaria 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 Pilbaria

In research: Pilbaria 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 Pilbaria 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: Pilbaria is common in secondary-school and first-year university syllabi. It links to neighbouring topics Cyanobacteria genera, Cyanobacteria stubs, Fossil taxa described in 1972, so understanding it makes those chapters shorter.
In everyday life: Look for Pilbaria 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 Pilbaria in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Pilbaria 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 Pilbaria out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Pilbaria in simple terms?

Why does Pilbaria 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 Pilbaria?

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 Pilbaria.