biology

Liratoniella

Liratoniella 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 Liratoniella rather than just read about it. In short: Liratoniella is a genus of small sea snails, marine gastropod mollusks in the family Eatoniellidae. It is monotypic, being represented by the single species Liratoniella bicarinata.

Key takeaways

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

Reference excerpt

Liratoniella is a genus of small sea snails, marine gastropod mollusks in the family Eatoniellidae. It is monotypic, being represented by the single species Liratoniella bicarinata. L. bicarinata is endemic to New Zealand, found off the coast of Three Kings Islands and on Middlesex Bank, living on Bryozoan substrates.

Description In the original description, Ponder described L. bicarinata as below:

Shell of moderate size for the family, white, with a dark red inner chitinous layer showing through, solid yet semi-transparent, with two heavy spiral keels on each whorl. Protoconch sharply angled, a weak cord on edge of angle, rather flat on top, not distinctly marked off. Whorls 4, two strong spiral cords on each whorl, one cord just below suture, other just above, with suture in a narrow groove between them. A flat space between cords, raised higher than sutural groove, and smooth except for slightly oblique, fine growth lines. A strong spiral cord on base emerging at junction of outer lip with inner lip, Just behind outer lip there are only weak spirals. Aperture nearly circular, columella strongly excavated, thin; peristome continuous, sharp. Outer lip bent downwards in posterior corner and reflected slightly. Last half of body whorl with no chitinous layer and therefore pure white. The animal is unpigmented, with large eyes and a short bliobed snout. The holotype of the species has a height of 1.975 mm (0.0778 in), and a width of 1.26 mm (0.050 in).

Taxonomy The genus and species were first described by Winston Ponder in 1965 in the same paper. The holotype of the species is held by the National Institute of Water and Atmospheric Research.

Distribution and habitat This marine species is endemic to New Zealand and occurs off Three Kings Islands and on Middlesex Bank, at a depth ranging between 37–805 m (121–2,641 ft). The species is known to live on Bryozoan substrates.

References

Worked examples

Example 1 — a first encounter with Liratoniella

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

In research: Liratoniella 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 Liratoniella 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: Liratoniella is common in secondary-school and first-year university syllabi. It links to neighbouring topics Eatoniellidae, Endemic molluscs of New Zealand, Gastropod genera, so understanding it makes those chapters shorter.
In everyday life: Look for Liratoniella 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 Liratoniella in 20 minutes

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

Frequently asked questions

What is Liratoniella in simple terms?

Liratoniella is a genus of small sea snails, marine gastropod mollusks in the family Eatoniellidae. It is monotypic, being represented by the single species Liratoniella bicarinata.

Why does Liratoniella 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 Liratoniella?

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 Liratoniella.