biology

Lewesiceras

Lewesiceras 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 Lewesiceras rather than just read about it. In short: Lewesiceras is a genus of large ammonites belonging to the order Ammonitida and the family Pachydiscidae. They lived in the late Cretaceous period, in the Cenomanian and Turonian ages, which occurred 99.6-89.3 million years ago.

Key takeaways

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

Reference excerpt

Lewesiceras is a genus of large ammonites belonging to the order Ammonitida and the family Pachydiscidae. They lived in the late Cretaceous period, in the Cenomanian and Turonian ages, which occurred 99.6-89.3 million years ago. These shelled ammonoids were nektonic, fast-moving and carnivorous.

Fossils distribution Cretaceous of Armenia, France, Germany, United States (Texas), Uzbekistan.

Species Lewesiceras mantelli Wright and Wright, 1951 Lewesiceras peramplum (Mantell, 1822) Lewesiceras wiedmanni Wright & Kennedy, 1984

Gallery

References Biolib The Paleobiology Database Archived 2007-10-01 at the Wayback Machine Sepkoski, Jack Sepkoski's Online Genus Database – Cephalopods Ammonitida Wittler, F. A. & Roth, R. (2003): Fazies und Fauna der Oberkreidegesteine im Dortmunder Stadtgebiet. I: Temporäre Aufschlüsse imTuron und Unterconiac zwischen 1988 und 2001. Stratigraphie, Fossilführung.- Dortm. Beiträge Landeskde., naturwiss. Mitt. 36/37: 241-340 (Dortmunder-Beitr-Landeskde_36-37_0247-0340.pdf), Abb. 6 ff.

Illustrations

Worked examples

Example 1 — a first encounter with Lewesiceras

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

In research: Lewesiceras 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 Lewesiceras 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: Lewesiceras is common in secondary-school and first-year university syllabi. It links to neighbouring topics Ammonitida genera, Ammonitina stubs, Cretaceous ammonites, so understanding it makes those chapters shorter.
In everyday life: Look for Lewesiceras 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 Lewesiceras in 20 minutes

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

Frequently asked questions

What is Lewesiceras in simple terms?

Why does Lewesiceras 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 Lewesiceras?

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 Lewesiceras.