biology

Vigilosaurus

Vigilosaurus 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 Vigilosaurus rather than just read about it. In short: Vigilosaurus is an extinct genus of reptiles from the Permian-aged Guodikeng Formation of Xinjiang, China. The genus contains a single species, Vigilosaurus gaochangensis, known from a partial left hindlimb.

Key takeaways

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

Reference excerpt

Vigilosaurus is an extinct genus of reptiles from the Permian-aged Guodikeng Formation of Xinjiang, China. The genus contains a single species, Vigilosaurus gaochangensis, known from a partial left hindlimb.

Classification When it was described in 2023, the Vigilosaurus holotype was identified as a possible member of the archosauriform clade Proterochampsia. This would make Vigilosaurus one of the oldest known archosauromorphs, indicating they had diversified much more rapidly than previously thought. However, a 2025 publication revisited the specimen, recovering it outside of the Archosauromorpha altogether. Instead, it was identified as outside of the reptile crown group (Sauria), diverging after the South African genus Youngina. These contrasting results are displayed in the cladograms below:

References

Worked examples

Example 1 — a first encounter with Vigilosaurus

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

In research: Vigilosaurus 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 Vigilosaurus 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: Vigilosaurus is common in secondary-school and first-year university syllabi. It links to neighbouring topics Archosauriformes, Fossil taxa described in 2023, Permian China, so understanding it makes those chapters shorter.
In everyday life: Look for Vigilosaurus 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 Vigilosaurus in 20 minutes

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

Frequently asked questions

What is Vigilosaurus in simple terms?

Why does Vigilosaurus 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 Vigilosaurus?

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 Vigilosaurus.