science

Priabona florissantius

Priabona florissantius 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 Priabona florissantius rather than just read about it. In short: Priabona is an extinct genus of big-headed flies in the dipteran subfamily Nephrocerinae, within which it is one of only two genera. The genus contains a single described species, Priabona florissantius.

Key takeaways

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

Reference excerpt

Priabona is an extinct genus of big-headed flies in the dipteran subfamily Nephrocerinae, within which it is one of only two genera. The genus contains a single described species, Priabona florissantius. Priabona is known from a single Late Eocene fossil from western North America.

History and classification Priabona is known from a compression-impression fossil preserved in fine shale of the Florissant Formation in Colorado. The formation is composed of successive lake deposits which have preserved a diverse assemblage of insects. The insects and plants suggest a climate similar to modern Southeastern North America, with a number of taxa represented that are now found in the subtropics to tropics and confined to the Old World. When Priabona was described, the Florissant formation was considered to be Miocene in age, based on the flora and fauna preserved. Subsequent research and fossil descriptions permitted a re-examined dating, and by 1985 the formation had been reassigned to an Oligocene age. Further refinement of the formation's age using radiometric dating of sanidine crystals has resulted in an age of 34 million years, which places the formation in the Late Eocene Priabonian stage. At the time of description the holotype specimen, number 3976 was deposited in the Museum of Comparative Zoology paleontology collections at Harvard University. Placement of the group has changed several times, with Nepherocerus Metanephrocerus Priabona and Protonephrocerus being placed in the pipunculid subfamily Nephrocerinae from 1948 until 2014. The placement of the tribe Protonephrocerini, containing Metanephrocerus and Protonephrocerus, was challenged in 2014 by Kehlmaier, Dierick and Skevington who suggested inclusion of the genera made Nephrocerinae paraphyletic. As such they elevated the tribe Protonephrocerini to the subfamily rank as Protonephrocerinae, leaving only Nephrocerus and Priabona in Nephrocerinae. The species was originally placed into the genus Protonephrocerus by Frank M. Carpenter and F.M. Hull with their type description in 1939. The species was moved in 2014, based on a redescription of the type specimen, to the new genus Priabona. The generic epithet "Priabona" is taken from Priabonian, the age of the Florissant Formation.

Description P. florissantius has a body length of 4.5 millimetres (0.18 in), with the details of the head mostly indistinct. There appears to be a notch between the eyes which runs halfway up the rear-side of the head capsule. The wings of the holotype are 4.6 millimetres (0.18 in) and hyaline overall, with a darkening of the pterostigma. The femurs of P. florissantius are unique in that they have several darkened spines on the undersides and which have setae on the front and upper sides, a feature absent in Nephrocerus.

References

Worked examples

Example 1 — a first encounter with Priabona florissantius

Start with the simplest possible case. Write down what Priabona florissantius 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 Priabona florissantius 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 Priabona florissantius 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 Priabona florissantius

In research: Priabona florissantius 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 Priabona florissantius 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: Priabona florissantius is common in secondary-school and first-year university syllabi. It links to neighbouring topics Eocene insects, Florissant Formation, Fossil taxa described in 2014, so understanding it makes those chapters shorter.
In everyday life: Look for Priabona florissantius 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 Priabona florissantius in 20 minutes

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

Frequently asked questions

What is Priabona florissantius in simple terms?

Why does Priabona florissantius 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 Priabona florissantius?

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 Priabona florissantius.