biology

Parictis

Parictis 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 Parictis rather than just read about it. In short: Parictis is an extinct arctoid belonging to the family Subparictidae. Taxonomy & evolution It was originally described as a new genus and species Parietis princeous of mustelid by Scott in 1893, for a single specimen, a mandible fragment with two anterior molars.

Key takeaways

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

Reference excerpt

Parictis is an extinct arctoid belonging to the family Subparictidae.

Taxonomy & evolution It was originally described as a new genus and species Parietis princeous of mustelid by Scott in 1893, for a single specimen, a mandible fragment with two anterior molars. An alternative name and spelling, ?Parictis princeps, was proposed in 1894; and in 1904 both the genus and species name were declared to be in error and the name Parictis primaevus was assigned. Parictis bathygenus was described in 1947, but it was considered a different genus by 1958, and a synonym of Cynelos caroniavorus by 1976. Another species was described in 1954 as Campylocynodon personi, and was reassigned to the genus Parictis in 1967. And Parictis major was described during a review of the genus in 1972. The genus as a whole was placed within various families, including Canidae by Hall in 1931 and Ursidae by Hunt in 1998. It is placed within the family Subparictidae as of 2023.

Description It was a very small and graceful arctoid with a skull only 7 cm long. Parictis first appeared in North America in the Late Eocene (around 38 million years ago), but it did not arrive in Eurasia until the Miocene. Some suggest that Parictis may have emigrated from Asia into North America during the major sea level low about 37 mya, because of the continued evolution of the Amphicynodontinae into the Hemicyoninae in Asia. Although no Parictis fossils have been found in East Asia, Parictis does appear in Eurasia and Africa, but not until the Miocene.

References

Worked examples

Example 1 — a first encounter with Parictis

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

In research: Parictis 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 Parictis 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: Parictis is common in secondary-school and first-year university syllabi. It links to neighbouring topics Eocene carnivorans, Eocene mammals of North America, Miocene genus extinctions, so understanding it makes those chapters shorter.
In everyday life: Look for Parictis 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 Parictis in 20 minutes

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

Frequently asked questions

What is Parictis in simple terms?

Parictis is an extinct arctoid belonging to the family Subparictidae. Taxonomy & evolution It was originally described as a new genus and species Parietis princeous of mustelid by Scott in 1893, for a single specimen, a mandible fragment with two anterior molars.

Why does Parictis 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 Parictis?

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 Parictis.