science

Paulchoffatiidae

Paulchoffatiidae is a science 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 Paulchoffatiidae rather than just read about it. In short: Paulchoffatiidae is a family of extinct mammals that lived predominantly during the Late Jurassic epoch, though a couple of genera are known from the Early Cretaceous. Fossils have been reported from Europe (Portugal, Spain, Germany, and England).

Key takeaways

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

Reference excerpt

Paulchoffatiidae is a family of extinct mammals that lived predominantly during the Late Jurassic epoch, though a couple of genera are known from the Early Cretaceous. Fossils have been reported from Europe (Portugal, Spain, Germany, and England). Paulchoffatiids were members of the order Multituberculata. They were relatively early representatives and are within the informal suborder of "Plagiaulacida". The family was named by G. Hahn in 1969, and it honors the Portuguese geologist Léon Paul Choffat. The most productive fossil site for Paulchoffatiids has been Guimarota, Portugal. Remains from this locality are generally diagnosed on the basis of lower or upper jaws. In only one instance, that of Kuehneodon, has it been possible to match the two up. Some of the lower jaws probably represent the same animals as some of the upper, so the diversity of Paulchoffatiids is very possibly exaggerated. As the site is now a flooded, disused coalmine, further excavations are highly unlikely. However, other locations may yet provide more clarity.

Taxonomy Two subfamilies of Paulchoffatiidae are recognised. One is known as Paulchoffatiinae. The other is known as Kuehneodontinae. The subfamily Paulchoffatiinae includes Paulchoffatia, Bathmochoffatia, Guimarotodon, Henkelodon, Kielanodon, Meketibolodon, Meketichoffatia, Plesiochoffatia, Pseudobolodon, Galveodon, Sunnyodon, and Xenachoffatia. The subfamily Kuehneodontinae, meanwhile, is a taxon restricted to one genus, Kuehneodon, with seven species. Rugosodon from the Middle Jurassic of China, known from a mostly complete skeleton, was formerly referred to the family, but was later considered an indeterminate member of the Paulchoffatiid-line.

Palaeobiology Tooth occlusion in paulchoffatiids was inexact and imprecise compared to in other multituberculates, as indicated by dental microwear. Paulchoffatiid mastication occurred in two phases: a puncture-crushing cycle and a grinding cycle.

References

Hahn G. and Hahn R. (2000), Multituberculates from the Guimarota mine, p. 97-107 in Martin T. and Krebs B. (eds), Guimarota - A Jurassic Ecosystem, Published by Dr Friedrich Pfeil in Münich, Germany. Kielan-Jaworowska Z. and Hurum J.H. (2001), "Phylogeny and Systematics of multituberculate mammals". Paleontology 44, p. 389-429. Much of this information has been derived from [1] MESOZOIC MAMMALS; Basal Multituberculata, an Internet directory.

Illustrations

Worked examples

Example 1 — a first encounter with Paulchoffatiidae

Start with the simplest possible case. Write down what Paulchoffatiidae claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, 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 Paulchoffatiidae 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 Paulchoffatiidae 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 Paulchoffatiidae

In research: Paulchoffatiidae appears in science 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 Paulchoffatiidae 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: Paulchoffatiidae is common in secondary-school and first-year university syllabi. It links to neighbouring topics Cretaceous extinctions, Fossil taxa described in 1969, Jurassic first appearances, so understanding it makes those chapters shorter.
In everyday life: Look for Paulchoffatiidae 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 Paulchoffatiidae in 20 minutes

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

Frequently asked questions

What is Paulchoffatiidae in simple terms?

Why does Paulchoffatiidae matter?

Because it connects several science 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 Paulchoffatiidae?

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 Paulchoffatiidae.