science

Pristiguana

Pristiguana 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 Pristiguana rather than just read about it. In short: Pristiguana is an extinct genus of possible iguanian lizard from the Maastrichtian Marília Formation of Brazil. The type species is P. brasiliensis.

Key takeaways

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

Reference excerpt

Pristiguana is an extinct genus of possible iguanian lizard from the Maastrichtian Marília Formation of Brazil. The type species is P. brasiliensis.

Description Pristiguana was discovered in the Bauru Group of Brazil. Its discoverers said, in 1973, that it is originally considered as the oldest fossil lizard in the family Iguanidae. It resembles living primitive South American iguanids in some features, and shares some features with teiids. However, in 2012 study, phylogenic analysis found that it was a primitive iguanian forming a clade with Huehuecuetzpalli (which is considered as stem-squamate in more recent studies). Later studies questioned its pleurodontan and iguanian affinity. The specimen is apparently lost.

References

Further reading Richard Estes and Llewellyn I. Price, Iguanid Lizard from the Upper Cretaceous of Brazil, Science, 18 May 1973, vol. 180. no. 4087, pp. 748–751 abstract

Worked examples

Example 1 — a first encounter with Pristiguana

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

In research: Pristiguana 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 Pristiguana 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: Pristiguana is common in secondary-school and first-year university syllabi. It links to neighbouring topics Cretaceous Brazil, Cretaceous lizards, Fossil taxa described in 1973, so understanding it makes those chapters shorter.
In everyday life: Look for Pristiguana 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.

Ask Teacher Smith questions about this articleOpens your AI tutor with a question about “Pristiguana” →

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Pristiguana in 20 minutes

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

Frequently asked questions

What is Pristiguana in simple terms?

Pristiguana is an extinct genus of possible iguanian lizard from the Maastrichtian Marília Formation of Brazil. The type species is P. brasiliensis.

Why does Pristiguana 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 Pristiguana?

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 Pristiguana.