biology

Vjushkovisaurus

Vjushkovisaurus 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 Vjushkovisaurus rather than just read about it. In short: Vjushkovisaurus is an extinct genus of Middle Triassic archosauriform. It is known from the Anisian-aged Donguz Gorizont in Sol-Iletsk, Orenburg Oblast, Russia.

Key takeaways

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

Reference excerpt

Vjushkovisaurus is an extinct genus of Middle Triassic archosauriform. It is known from the Anisian-aged Donguz Gorizont in Sol-Iletsk, Orenburg Oblast, Russia. The genus was named in 1982, with the type species being V. berdjanensis. Material has been collected in the Berdyanka II locality from a fossil assemblage called the Eryosuchus Fauna along the Berdyanka River, specifically in a sand-carbonate concretion in the upper part of the main river channel. Vjushkovisaurus is known only from the holotype PIN 2865/62 (formerly SGU 104/3871), a partial postcranial skeleton which consists of 12 presacral vertebrae, left humerus, ribs, a fragment of the coracoid and a fragment of the fibula.

Description Most rauisuchids have a crest on the ilium called the supra-acetabular process that overlies the head of the femur, allowing them to have a "pillar-erect" stance. As an early rauisuchid Vjushkovisaurus lacks this crest, but it does have a small thickening on the surface of the ilium. The humerus differs from other better known rauisuchids in that it is shorter and broader. However, it has been suggested that the only known humerus of Vjushkovisaurus may actually belong to an aetosaur. More recently, Nesbitt (2009) argued that Vjushkovisaurus represent most probably a valid non-archosaurian archosauriform. According to his analysis, the original diagnosis of Vjushkovisaurus by Ochev (1982) consisted of some of the plesiomorphies for Archosauriformes and characters with wide distributions throughout archosauriforms. For example, elongated anterior cervical vertebrae are present in the poposauroids, Yarasuchus, and in the non-archosaurian archosauriforms Proterosuchus and Guchengosuchus. Other features which are typically thought to be associated with skeletal pneumaticity, are also present in Guchengosuchus, Erythrosuchus, and in several archosaurs. Additionally, the shape and placement of the deltopectoral crests of the humerus of Vjushkovisaurus are typical of basal archosauriforms. The ectepicondylar groove on the humerus reported by Ochev is present in Prolacerta, Proterosuchus, phytosaurs, aetosaurs and several paracrocodylomorphs. Gower and Sennikov (2000) reported that the posterior cervical vertebrae bear well-defined facets for three-headed ribs. According to Nesbitt (2009), this trait is absent in Archosauria with the possible exception of Arizonasaurus and Poposaurus, but was used as a synapomorphy of Erythrosuchia in Parrish (1992) phylogenetic analysis.

Paleobiology Other vertebrates from the Berdyanka II locality that lived alongside Vjushkovisaurus include capitosauroid temnospondyls and the therapsid Nothogomphodon, one of the last therocephalians. Vjushkovisaurus was likely a top predator in its environment along other large carnivores including Dongusuchus and Erythrosuchus.

References

External links Vjushkovisaurus in the Paleobiology Database

Worked examples

Example 1 — a first encounter with Vjushkovisaurus

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

In research: Vjushkovisaurus 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 Vjushkovisaurus 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: Vjushkovisaurus is common in secondary-school and first-year university syllabi. It links to neighbouring topics Anisian genera, Archosauriformes, Fossil taxa described in 1982, so understanding it makes those chapters shorter.
In everyday life: Look for Vjushkovisaurus 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 Vjushkovisaurus in 20 minutes

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

Frequently asked questions

What is Vjushkovisaurus in simple terms?

Vjushkovisaurus is an extinct genus of Middle Triassic archosauriform. It is known from the Anisian-aged Donguz Gorizont in Sol-Iletsk, Orenburg Oblast, Russia.

Why does Vjushkovisaurus 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 Vjushkovisaurus?

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 Vjushkovisaurus.