biology

Tingamarra

Tingamarra 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 Tingamarra rather than just read about it. In short: Tingamarra is an extinct genus of mammals from Australia. Its age, lifestyle, and relationships remain controversial.

Key takeaways

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

Reference excerpt

Tingamarra is an extinct genus of mammals from Australia. Its age, lifestyle, and relationships remain controversial.

Discovery Tingamarra was discovered in 1987, when a single tooth was found at the Murgon fossil site in south-eastern Queensland. An ankle bone and an ear bone found at Murgon may also belong to this animal.

Material Holotype: QMF20564, isolated right lower molar, probably an M2 or M3.

Diagnosis Non-twinned hypoconulid and entoconid. Lack of a well developed buccal postcingulid. Lack of anteroposteriorly compressed trigonid. Broadly open trigonid. Lingually situated paraconid that is also well anterior to the protoconid.

Assumed lifestyle Tingamarra is believed to be a small (about 20 cm from head to tail) ground-dwelling mammal that ate insects and fruit.

Scientific significance The age of Murgon fossils was determined as the early Eocene. By the shape of the found tooth, Tingamarra was first classified as a condylarth. This is a primitive order of mammals which are ancestral to modern ungulates. If this interpretation is correct, Tingamarra appears to be the only land-based placental mammal to have arrived to Australia before about 8 million years ago. The only other placental mammals in Australia that arrived before humans are rodents and bats. Most Australian mammals are marsupials instead. Before Tingamarra was found, it was hypothesised that marsupials had done well in Australia only because for many millions of years they had no placentals to compete with. However, both the age and placental nature of Tingamarra were subsequently challenged by other researchers. Woodburne et al. argued that: 1) the true age of Murgon fossil site is the late Oligocene, and 2) that indeed neither shape nor microstructure of the tooth do not allow to distinguish whether Tingamarra was marsupial or placental. Then Rose concluded that at present there is no undoubted evidence to change the established views.

References

Worked examples

Example 1 — a first encounter with Tingamarra

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

In research: Tingamarra 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 Tingamarra 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: Tingamarra is common in secondary-school and first-year university syllabi. It links to neighbouring topics Condylarths, Eocene mammals of Australia, Fossil taxa described in 1992, so understanding it makes those chapters shorter.
In everyday life: Look for Tingamarra 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 Tingamarra in 20 minutes

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

Frequently asked questions

What is Tingamarra in simple terms?

Tingamarra is an extinct genus of mammals from Australia. Its age, lifestyle, and relationships remain controversial.

Why does Tingamarra 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 Tingamarra?

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 Tingamarra.