biology

Parvosuchus

Parvosuchus 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 Parvosuchus rather than just read about it. In short: Parvosuchus (meaning "small crocodile") is an extinct genus of gracilisuchid pseudosuchians from the Middle–Late Triassic Santa Maria Formation (Paraná Basin) of Brazil. The genus contains a single species, P. aurelioi, known from a cranium and partial skeleton.

Key takeaways

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

Reference excerpt

Parvosuchus (meaning "small crocodile") is an extinct genus of gracilisuchid pseudosuchians from the Middle–Late Triassic Santa Maria Formation (Paraná Basin) of Brazil. The genus contains a single species, P. aurelioi, known from a cranium and partial skeleton.

Discovery and naming

The Parvosuchus holotype specimen, CAPPA/UFSM 0412, was discovered at the Linha Várzea 2 site in the Pinheiros-Chiniquá Sequence, which belongs to the Santa Maria Formation of the Santa Maria Supersequence (Paraná Basin) in Paraíso do Sul municipality of Rio Grande do Sul state, Brazil. This locality represents the Dinodontosaurus Assemblage Zone. The specimen consists of a largely articulated skeleton, including the skull and lower jaws, the last 11 dorsal vertebrae, two sacral vertebrae, a pelvic girdle, part of the right femur, and a partial left hindlimb (comprising pieces of the femur, tibia, fibula, and calcaneum). In 2024, Rodrigo T. Müller described Parvosuchus aurelioi as a new genus and species of gracilisuchid pseudosuchians based on these fossil remains. The generic name, Parvosuchus, combines "parvus", a Latin word meaning "small", with "suchus", a Greek word meaning "crocodile" (σοῦχος, after Sobek, the crocodile-headed ancient Egyptian deity). The specific name, aurelioi, honors Pedro L. P. Aurélio, the discoverer of the holotype.

Description

The skull of Parvosuchus is 144 millimetres (5.7 in) long. Based on its fossil remains and those of more complete relatives, its body length is estimated at 1 metre (3.3 ft). Its teeth are blade-like and elongated, a feature indicative of predatory behavior and carnivorous habits.

Classification In his phylogenetic analyses, Müller (2024) recovered Parvosuchus in a clade with Maehary (which was originally identified as an early pterosauromorph) and Gracilisuchus within the Gracilisuchidae. These results are displayed in the cladogram below:

References

Illustrations

Worked examples

Example 1 — a first encounter with Parvosuchus

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

In research: Parvosuchus 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 Parvosuchus 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: Parvosuchus is common in secondary-school and first-year university syllabi. It links to neighbouring topics Fossil taxa described in 2024, Fossils of Brazil, Gracilisuchidae, so understanding it makes those chapters shorter.
In everyday life: Look for Parvosuchus 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 Parvosuchus in 20 minutes

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

Frequently asked questions

What is Parvosuchus in simple terms?

Why does Parvosuchus 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 Parvosuchus?

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 Parvosuchus.