biology

Khulsanurus

Khulsanurus 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 Khulsanurus rather than just read about it. In short: Khulsanurus (meaning "tail from Khulsan") is an extinct genus of alvarezsaurid theropod dinosaur from the Late Cretaceous Baruungoyot Formation of the Khulsan Locality in the Gobi Desert region of Mongolia. The type and only species is Khulsanurus magnificus.

Key takeaways

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

Reference excerpt

Khulsanurus (meaning "tail from Khulsan") is an extinct genus of alvarezsaurid theropod dinosaur from the Late Cretaceous Baruungoyot Formation of the Khulsan Locality in the Gobi Desert region of Mongolia. The type and only species is Khulsanurus magnificus.

Description Khulsanurus is known from a holotype containing partial vertebral series of the neck and tail, scapulocoracoids, a right humerus, a possible left humerus, and a left pubis. Distinguishing autapomorphies of this specimen include pleurocoel-, carotid process-, and epipophysis-less cervical vertebrae, prominent infrapostzygapophyseal fossa of the caudal vertebrae which also bear anteriorly pointing prezygapophyses.

Classification Averianov & Lopatin (2021) placed Khulsanurus in a polytomy with Albinykus, Ceratonykus, Linhenykus, Parvicursor, Xixianykus, Qiupanykus, Nemegtonykus, PIN 5838/1 (=Ondogurvel) and a clade containing Shuvuuia and Mononykus in a strict consensus tree using unweighted characters. However, Averianov & Lopatin (2021) also recovered it in a polytomy with only Albinykus, Xixianykus, PIN 5838/1 (=Ondogurvel), Mononykus and Shuvuuia in a consensus tree using implied weighting. Averianov & Sues (2022) conducted a phylogenetic analysis using implied weighting which recovered it in a similar position but with inclusion of a clade containing Linhenykus, Ceratonykus and Parvicuror and the exclusion of Qiupanykus and Nemegtonykus, while a 50% majority rule tree from the same analysis placed it within a polytomy with two clades. A phylogenetic analysis conducted by Averianov & Sues (2022) is reproduced below.

Paleoenvironment Khulsanurus was found in the Campanian Barun Goyot Formation, which was also home to many other animals, including mammals such as Catopsbaatar and Nemegtbaatar, squamates such as Estesia, Gobiderma, and Proplatynotia, and numerous dinosaurs, including ornithischians such as Saichania, Tarchia, Zaraapelta, Tylocephale, Bagaceratops, Breviceratops, and Udanoceratops; sauropods such as Quaesitosaurus; and theropods, including Conchoraptor, Heyuannia, Nemegtomaia, Hulsanpes, Kuru, Shri devi, Ceratonykus, Ondogurvel, Parvicursor, Gobipteryx, and Hollanda.

References

Worked examples

Example 1 — a first encounter with Khulsanurus

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

In research: Khulsanurus 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 Khulsanurus 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: Khulsanurus is common in secondary-school and first-year university syllabi. It links to neighbouring topics Alvarezsauridae, Baruungoyot Formation, Dinosaur genera, so understanding it makes those chapters shorter.
In everyday life: Look for Khulsanurus 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 Khulsanurus in 20 minutes

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

Frequently asked questions

What is Khulsanurus in simple terms?

Why does Khulsanurus 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 Khulsanurus?

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 Khulsanurus.