biology

Palaeopteryx

Palaeopteryx 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 Palaeopteryx rather than just read about it. In short: Palaeopteryx (meaning "ancient wing") is an extinct genus of dubious paravian theropod dinosaur from the Morrison Formation of Colorado. The type species is P. thomsoni.

Key takeaways

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

Reference excerpt

Palaeopteryx (meaning "ancient wing") is an extinct genus of dubious paravian theropod dinosaur from the Morrison Formation of Colorado. The type species is P. thomsoni.

Discovery and naming The holotype, BYU 2022, was collected sometime between 1972 and 1976 by a paleontological expedition from Brigham Young University directed by James A. Jensen in the "Dry Mesa" quarry on the Uncompahgre Upwarp in western Colorado (Brushy Basin Member, Morrison Formation). It was found among mixed fossil remains that included pterosaur and dinosaur material. Palaeopteryx thomsoni was named by Jensen (1981), then re-described by Jensen and Padian (1989). At that time the binomial Palaeopteryx thomsoni was deemed invalid by Jensen.

One notable specimen found alongside the holotype of Palaeopteryx is the right femur of a derived maniraptoran theropod (BYU 2023). BYU 2023 is missing the distal end and is about 63 millimetres (2+1⁄2 in) long. It is probably too small to be from the same individual as BYU 2022. BYU 2023 shows apomorphies known only in advanced maniraptorans, including Microvenator, Microraptor, and Archaeopteryx.

Description The holotype bone is about 45 millimetres (1+3⁄4 in) long. It was described by Jensen (1981) as an "avian – like" proximal left tibiotarsus. It was then listed by Molnar (1985) in a survey of the earliest known birds. Jensen and Padian (1989) reidentified it as the distal right radius of "a small deinonychosaur or bird".

Classification Palaeopteryx has been the subject of much confusion on the internet, in the popular scientific press, and among creationist writers. It has been described as a possible bird older than Archaeopteryx, but it cannot be clearly assigned to Avialae, and its horizon is younger than that of Archaeopteryx, though it is still from the Jurassic. Palaeopteryx is currently classified as a member of the Paraves, within Theropoda.

References

Worked examples

Example 1 — a first encounter with Palaeopteryx

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

In research: Palaeopteryx 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 Palaeopteryx 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: Palaeopteryx is common in secondary-school and first-year university syllabi. It links to neighbouring topics Dinosaur genera, Dinosaurs of the Morrison Formation, Fossil taxa described in 1981, so understanding it makes those chapters shorter.
In everyday life: Look for Palaeopteryx 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 Palaeopteryx in 20 minutes

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

Frequently asked questions

What is Palaeopteryx in simple terms?

Palaeopteryx (meaning "ancient wing") is an extinct genus of dubious paravian theropod dinosaur from the Morrison Formation of Colorado. The type species is P. thomsoni.

Why does Palaeopteryx 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 Palaeopteryx?

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 Palaeopteryx.