science

Procuhy

Procuhy 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 Procuhy rather than just read about it. In short: Procuhy is an extinct genus of dvinosaurian temnospondyl amphibian in the family Trimerorhachidae represented by the type species Procuhy nazariensis from the Early Permian of Brazil. History of study Procuhy was named in 2015 on the basis of a partial skull from the lower part of the Pedra de Fogo Formation in Parnaíba Basin, which is about 278 million years old.

Key takeaways

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

Reference excerpt

Procuhy is an extinct genus of dvinosaurian temnospondyl amphibian in the family Trimerorhachidae represented by the type species Procuhy nazariensis from the Early Permian of Brazil.

History of study Procuhy was named in 2015 on the basis of a partial skull from the lower part of the Pedra de Fogo Formation in Parnaíba Basin, which is about 278 million years old. The genus name comes from the words for 'frog' (prôt) and 'fire' (cuhy) in the local Timbira language of the Macro-Jê group and refers to the name of the Pedra de Fogo Formation. The species name comes from the Nazaria Municipality where the holotype was collected from. A second specimen, discovered in 2015, was described by Marsicano et al. (2021), who provided a more complete description of this taxon.

Anatomy Both specimens of P. nazariensis are relatively fragmentary, and the taxon is diagnosed only by a unique combination of characters rather than by any autapomorphies. Per Marsicano et al., this combination is: anteriormost extension of the squamosal posterior to parietal midlength; combined width of both parietals equal to interorbital width; pineal foramen positioned posterior to the midlength of the parietal; supratemporal exposed on the posterior border of the skull table; length of the parietal more than three times its width; in the mandible, presence of postglenoid process of the surangular separated from the retroarticular process of the articular by the mandibular sulcus.

Phylogeny

Below are the phylogenetic results of Marsicano et al. (2021):

Both these results and those of the original description by Cisneros et al. (2015) show that Procuhy is more closely related to the North American Trimerorhachis than to the other dvinosaur from the Pedra de Fogo Formation, Timonya, although both are more closely related to North American taxa than to younger taxa from the southern hemisphere like the Early Triassic Thabanchuia from South Africa. A close connection to the North American taxa is also corroborated by the occurrence of the captorhinid Captorhinikos in the Pedra de Fogo Formation.

References

Illustrations

Worked examples

Example 1 — a first encounter with Procuhy

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

In research: Procuhy 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 Procuhy 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: Procuhy is common in secondary-school and first-year university syllabi. It links to neighbouring topics Dvinosauria, Fossil taxa described in 2015, Fossils of Brazil, so understanding it makes those chapters shorter.
In everyday life: Look for Procuhy 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 Procuhy in 20 minutes

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

Frequently asked questions

What is Procuhy in simple terms?

Procuhy is an extinct genus of dvinosaurian temnospondyl amphibian in the family Trimerorhachidae represented by the type species Procuhy nazariensis from the Early Permian of Brazil. History of study Procuhy was named in 2015 on the basis of a partial skull from the lower part of the Pedra de Fogo…

Why does Procuhy 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 Procuhy?

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 Procuhy.