biology

Hyperlioceras

Hyperlioceras 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 Hyperlioceras rather than just read about it. In short: Hyperlioceras is an extinct genus of cephalopod included in the ammonitid family Graphoceratidae that lived during the Bajocian stage of the Middle Jurassic. The type species is Hyperlioceras discites (Waagen, 18567) Morphology The shell of Hyperlioceras is very compressed and involute, with a tall persistent keel and a deep umbilicus.

Key takeaways

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

Reference excerpt

Hyperlioceras is an extinct genus of cephalopod included in the ammonitid family Graphoceratidae that lived during the Bajocian stage of the Middle Jurassic. The type species is Hyperlioceras discites (Waagen, 18567)

Morphology The shell of Hyperlioceras is very compressed and involute, with a tall persistent keel and a deep umbilicus.

Biostratigraphic significance The International Commission on Stratigraphy (ICS) has defined the base of the Bajocian Stage of the Jurassic as the lowest occurrence of the genus Hyperlioceras, at 170.3 ± 1.4 million years ago, which defines base of the Hyperlioceras discites Zone. This point also marks the end of the preceding Aalenian Stage. The upper boundary of the Bajocian is indicated by the lowest occurrence of the ammonite Parkinsonia (G.) convergens, at about 167.7 Ma, which defines base of Zigzagiceras zigzag Zone.

Distribution Luxembourg, Saudi Arabia, Spain and the United Kingdom.

Synonyms Source:

Braunsella Buckman, 1904 Braunsina Buckman, 1902 Darellia Darellina Buckman, 1904 Deltoidoceras Buckman, 1902 Deltotoceras Buckman, 1904 Dissoroceras Buckman, 1902 Hugia Buckman, 1904 Hyperlioceras (Toxolioceras) Lopadoceras Buckman, 1904 Reynesella Reynesia Buckman, 1902 Toxolioceras

References

W. Arkell et al., 1957. Mesozoic Ammonoidea; Treatise on Invertebrate Paleontology, Part L. Geological Society of America and University of Kansas Press. p. L264

Illustrations

Worked examples

Example 1 — a first encounter with Hyperlioceras

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

In research: Hyperlioceras 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 Hyperlioceras 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: Hyperlioceras is common in secondary-school and first-year university syllabi. It links to neighbouring topics Ammonites of Europe, Ammonitida genera, Bajocian life, so understanding it makes those chapters shorter.
In everyday life: Look for Hyperlioceras 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 Hyperlioceras in 20 minutes

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

Frequently asked questions

What is Hyperlioceras in simple terms?

Why does Hyperlioceras 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 Hyperlioceras?

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 Hyperlioceras.