biology

Tyrannoneustes

Tyrannoneustes 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 Tyrannoneustes rather than just read about it. In short: Tyrannoneustes is an extinct genus of geosaurine metriorhynchid crocodyliform from the Callovian stage Oxford Clay Formation of England and the Marnes de Dives of France. It contains a single species, Tyrannoneustes lythrodectikos, meaning "blood-biting tyrant swimmer".

Key takeaways

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

Reference excerpt

Tyrannoneustes is an extinct genus of geosaurine metriorhynchid crocodyliform from the Callovian stage Oxford Clay Formation of England and the Marnes de Dives of France. It contains a single species, Tyrannoneustes lythrodectikos, meaning "blood-biting tyrant swimmer".

History and description

The genus was rediscovered after a century of storage in a museum basement after being unearthed by fossil hunter Alfred Nicholson Leeds between the years of 1907 and 1909. Its lower jaw measured about 26 inches long and its teeth were blade-like, likely built to attack prey as large or larger than itself, similar to the Late Jurassic Dakosaurus, Torvoneustes, and Plesiosuchus. The holotype specimen was estimated to be more than 3.27 m (10.7 ft) in total body length by Young and his colleagues. Two other specimens (PETMG:R176 and NHMUK PV R3939) belonged to much larger individuals, measuring 4.65 m (15.3 ft) and 5.04 m (16.5 ft) in total body length, respectively.

Classification Tyrannoneustes is a member of the metriorhynchid subfamily called Geosaurinae and the derived tribe Geosaurini. Members were generally large marine predators, adapted to open-ocean life with streamlined bodies, powerful tails, and long, robust jaws lined with sharp teeth. The cladogram below is from an analysis by Léa Girard and colleagues in their description of Torvoneustes jurensis.

References

Illustrations

Worked examples

Example 1 — a first encounter with Tyrannoneustes

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

In research: Tyrannoneustes 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 Tyrannoneustes 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: Tyrannoneustes is common in secondary-school and first-year university syllabi. It links to neighbouring topics Callovian life, Fossil taxa described in 2013, Fossils of England, so understanding it makes those chapters shorter.
In everyday life: Look for Tyrannoneustes 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 Tyrannoneustes in 20 minutes

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

Frequently asked questions

What is Tyrannoneustes in simple terms?

Why does Tyrannoneustes 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 Tyrannoneustes?

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 Tyrannoneustes.