biology

Miodentosaurus

Miodentosaurus 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 Miodentosaurus rather than just read about it. In short: Miodentosaurus is a genus of thalattosaurian (a type of extinct marine reptile) from the Late Triassic of China. It is one of several thalattosaurs found in the Xiaowa Formation, also known as the Wayao Member of the Falang Formation.

Key takeaways

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

Reference excerpt

Miodentosaurus is a genus of thalattosaurian (a type of extinct marine reptile) from the Late Triassic of China. It is one of several thalattosaurs found in the Xiaowa Formation, also known as the Wayao Member of the Falang Formation. The genus name "Miodentosaurus" translates to "Few toothed-lizard" while the species name "brevis" means "short", in reference to its short snout.

Description Miodentosaurus is a thalattosaur, a group of marine reptiles with long, paddle-like tails and short legs with independently movable digits. It was a large member of the group, with a complete specimen measuring 4.4 metres (14 ft) long. Miodentosaurus is specifically an Askeptosauroid, a specific group of thalattosaurs with rather straight snouts. Despite being closely related to Askeptosaurus (a thalattosaur with a very long and toothy snout), Miodentosaurus had a quite short snout (shorter than the rest of the head) with only a few conical teeth on the premaxillae and dentaries. Although this snout configuration is not known in any other thalattosaurians, Miodentosaurus does share a number of other features with Askeptosauroids, such as having 10 neck vertebrae and a large pineal foramen. Apart from its unique cranial features, Miodentosaurus also has characteristically flat front claws and the two specimens known were both more than four meters long, making it one of the largest thalattosaurs known.

History and specimens The holotype of Miodentosaurus brevis, NMNS 004727 / F003960, is a well-preserved and fairly complete articulated skeleton. It was discovered in the Carnian-age Xiaowa Formation (or Wayao Member of the Falang Formation) of China, where other thalattosaurs as Anshunsaurus huangguoshuensis and Concavispina biseridens were found. The skull and mandibles were the first elements described in 2007, while the postcranial skeleton was described in 2009. An even more complete specimen, ZMNH M8742, was described in 2010. This specimen is one of the most complete thalattosaur skeletons known and also depicts pelvic, metatarsal, and coracoid features different from those of the holotype, showing instances of individual variation within the genus. A 2023 study by Chai et al. suggested that Miodentosaurus may actually represent the same animal as the contemporary Wayaosaurus, which was named in 2007, based on similarities in the skull, dorsal vertebrae, and pubis. This would render Miodentosaurus a subjective junior synonym of that genus. They also speculated that it is possible the two represent distinct species within the same genus.

References

Illustrations

Worked examples

Example 1 — a first encounter with Miodentosaurus

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

In research: Miodentosaurus 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 Miodentosaurus 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: Miodentosaurus is common in secondary-school and first-year university syllabi. It links to neighbouring topics Fossil taxa described in 2007, Fossils of China, Late Triassic reptiles of Asia, so understanding it makes those chapters shorter.
In everyday life: Look for Miodentosaurus 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 Miodentosaurus in 20 minutes

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

Frequently asked questions

What is Miodentosaurus in simple terms?

Why does Miodentosaurus 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 Miodentosaurus?

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 Miodentosaurus.