biology

Parastrapotherium

Parastrapotherium 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 Parastrapotherium rather than just read about it. In short: Parastrapotherium is an extinct genus of South American land mammal that existed from the Late Oligocene (Deseadan SALMA) to the Early Miocene (Colhuehuapian SALMA). The genus includes some of the largest and smallest known astrapotherians, but As of 2008 has no generally recognized description.

Key takeaways

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

Reference excerpt

Parastrapotherium is an extinct genus of South American land mammal that existed from the Late Oligocene (Deseadan SALMA) to the Early Miocene (Colhuehuapian SALMA). The genus includes some of the largest and smallest known astrapotherians, but As of 2008 has no generally recognized description.

Description

The genus was first described by Amagehino in 1895. He distinguished it from the Santacrucian (late Early Miocene) Astrapotherium based on the greater number of upper and lower molars. Although later researchers disagreed and concluded that Ameghino based his conclusion on very fragmentary materials, they mostly agreed to distinguish the genus from other groups of astrapotherians. In the mandibular canine of Parastrapotherium, the microstructure of the tooth enamel is characterised by vertical decussation with enamel prism zones bending in an undulatory pattern.

Species The following species have been recognised:

Parastrapotherium cingulatum Ameghino, 1894 Parastrapotherium ephebicum Ameghino, 1894 Parastrapotherium holmbergi Ameghino, 1894 Parastrapotherium lemoinei Ameghino, 1894 Parastrapotherium trouessarti Ameghino, 1894

Distribution Fossils of Parastrapotherium have been found in:

Oligocene Deseado Formation, Argentina Sarmiento Formation, Argentina Miocene Cerro Bandera Formation, Argentina Sarmiento Formation, Argentina

Palaeobiology The microstructural details of its long bones indicate that Parastrapotherium was specialised for graviportal locomotion.

References

Bibliography

Illustrations

Worked examples

Example 1 — a first encounter with Parastrapotherium

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

In research: Parastrapotherium 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 Parastrapotherium 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: Parastrapotherium is common in secondary-school and first-year university syllabi. It links to neighbouring topics Astrapotheriidae, Cerro Bandera Formation, Colhuehuapian, so understanding it makes those chapters shorter.
In everyday life: Look for Parastrapotherium 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 Parastrapotherium in 20 minutes

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

Frequently asked questions

What is Parastrapotherium in simple terms?

Why does Parastrapotherium 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 Parastrapotherium?

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 Parastrapotherium.