biology

Shelania

Shelania 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 Shelania rather than just read about it. In short: Shelania is an extinct genus of frogs that lived in South America during the Eocene. Its type species is Shelania pascuali.

Key takeaways

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

Reference excerpt

Shelania is an extinct genus of frogs that lived in South America during the Eocene. Its type species is Shelania pascuali. Fossils of Shelania have been found in the Mustersan Vaca Mahuida and Laguna del Hunco Formations of Argentina. Shelania is the type taxon of the Shelaniinae, which was erected for an unranked clade (defined in the context of phylogenetic nomenclature, although not in conformity with the PhyloCode, which was implemented later) that also includes the early anurans Saltenia, Kuruleufenia, and Patagopipa. A more recent phylogenetic analysis further suggested that Shelania is more closely related to Pipidae than to Palaeobatrachus, and that the second species previously attributed to Shelania (S. laurenti) is not sufficiently closely related to the type-species to be retained in Shelania.

Worked examples

Example 1 — a first encounter with Shelania

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

In research: Shelania 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 Shelania 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: Shelania is common in secondary-school and first-year university syllabi. It links to neighbouring topics Bartonian life, Cañadón Asfalto Basin, Eocene amphibians, so understanding it makes those chapters shorter.
In everyday life: Look for Shelania 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 Shelania in 20 minutes

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

Frequently asked questions

What is Shelania in simple terms?

Shelania is an extinct genus of frogs that lived in South America during the Eocene. Its type species is Shelania pascuali.

Why does Shelania 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 Shelania?

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 Shelania.