earth science

Nassarius crassiusculus

Nassarius crassiusculus is a earth 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 Nassarius crassiusculus rather than just read about it. In short: Nassarius crassiusculus, is a species of sea snail, a marine gastropod mollusc in the family Nassariidae, the Nassa mud snails or dog whelks. Taxonomy Buccinum / Nassarius elegans was regarded by Cernohorsky (1984) as a synonym of Nassarius comptus.

Key takeaways

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

Reference excerpt

Nassarius crassiusculus, is a species of sea snail, a marine gastropod mollusc in the family Nassariidae, the Nassa mud snails or dog whelks.

Taxonomy Buccinum / Nassarius elegans was regarded by Cernohorsky (1984) as a synonym of Nassarius comptus. It is listed in WoRMS as a valid species on the authority of H. Kool. However, as the name Buccinum elegans Kiener, 1834, is nomenclaturally invalid, it is listed under its replacement name, Buccinum / Nassarius crassiusculus.

Description The thick shell is ovate, conical, shining and smooth. Its ground color is whitish, ornamented with numerous undulated and reddish longitudinal lines. The spire composed of eight or nine convex whorls. The upper ones are plaited, and the others marked at their upper part with white and brown spots or blotches, alternately disposed, and surrounding the suture. A band a little deeper colored covers the body of the body whorl, the base of which is furnished with pretty distinct transverse striae or furrows, five or six in number. The white aperture is ovate, terminated above by a sort of canal, indicated by a transverse ridge upon the left lip. The outer lip is thick, slightly denticulated towards the base, and deeply striated within. The columella is arcuated, the base spirally folded. The left lip covers it, extends slightly upon the body of the shell, and forms a small, projecting keel, terminated by small drops, and a raised point.

Distribution This species occurs in the Indian Ocean off the Seychelles

References

Jarrett, A.G. (2000) Marine Shells of the Seychelles. Carole Green Publishing, Cambridge, xiv + 149 pp. NIZT 682 page(s): 69, fig. 300 Manganelli G., Spadini V. & Martini I. (2010). Rediscovery of an enigmatic Euro-Mediterranean Pliocene nassariid species: Nassarius crassiusculus Bellardi, 1882 (Gastropoda: Nassariidae). Bollettino della Società Paleontologica Italiana, 49 (3): 195–202

Illustrations

Worked examples

Example 1 — a first encounter with Nassarius crassiusculus

Start with the simplest possible case. Write down what Nassarius crassiusculus claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In earth 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 Nassarius crassiusculus 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 Nassarius crassiusculus 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 Nassarius crassiusculus

In research: Nassarius crassiusculus appears in earth 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 Nassarius crassiusculus 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: Nassarius crassiusculus is common in secondary-school and first-year university syllabi. It links to neighbouring topics Gastropods described in 1845, Molluscs of the Indian Ocean, Nassarius, so understanding it makes those chapters shorter.
In everyday life: Look for Nassarius crassiusculus 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 Nassarius crassiusculus in 20 minutes

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

Frequently asked questions

What is Nassarius crassiusculus in simple terms?

Nassarius crassiusculus, is a species of sea snail, a marine gastropod mollusc in the family Nassariidae, the Nassa mud snails or dog whelks. Taxonomy Buccinum / Nassarius elegans was regarded by Cernohorsky (1984) as a synonym of Nassarius comptus.

Why does Nassarius crassiusculus matter?

Because it connects several earth 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 Nassarius crassiusculus?

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 Nassarius crassiusculus.