biology

Xenosaurus

Xenosaurus 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 Xenosaurus rather than just read about it. In short: Xenosaurus is a genus of lizards; it is the only extant genus in the family Xenosauridae, with 14 species recognized. Also known commonly as knob-scaled lizards, species of Xenosaurus can found in Mexico and Guatemala.

Key takeaways

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

Reference excerpt

Xenosaurus is a genus of lizards; it is the only extant genus in the family Xenosauridae, with 14 species recognized. Also known commonly as knob-scaled lizards, species of Xenosaurus can found in Mexico and Guatemala. These lizards are known to feed on a variety of crawling and flying insects. This genus mostly eats orthopterans, coleopterans (beetles), dipterans, and myriapods.

Species The following 14 species are recognized as being valid.

Xenosaurus agrenon King & F.G. Thompson, 1968 Xenosaurus arboreus Lynch & H.M. Smith, 1965 Xenosaurus fractus Nieto-Montes de Oca, Sánchez-Vega & Durán-Fuentes, 2018 Xenosaurus grandis (Gray, 1856) Xenosaurus manipulus Nieto-Montes de Oca, Castresana-Villanueva, Canseco-Márquez & Campbell, 2022 Xenosaurus mendozai Nieto-Montes de Oca et al., 2013 Xenosaurus newmanorum Taylor, 1949 Xenosaurus penai Pérez Ramos, L. de la Riva & Campbell, 2000 Xenosaurus phalaroanthereon Nieto-Montes de Oca, Campbell & Flores-Villela, 2001 Xenosaurus platyceps King & Thompson, 1968 Xenosaurus rackhami L.C. Stuart, 1941 Xenosaurus rectocollaris H.M. Smith & Iverson, 1993 Xenosaurus sanmartinensis Werler & Shannon, 1961 – San Martin knob-scaled lizard Xenosaurus tzacualtipantecus Woolrich-Piña & G.R. Smith, 2012 Nota bene: A binomial authority in parentheses indicates that the species was originally described in a genus other than Xenosaurus.

References

Further reading Peters W (1861). "Eine neue Gattung von Eidechsen, Xenosaurus fasciatus, aus Mexico [= A new genus of lizards, Xenosaurus fasciatus, from Mexico]". Monatsberichte der Königlichen Preussischen Akademie zu Berlin 1861: 453–454. (Xenosaurus, new genus). (in German).

External links

Genus Xenosaurus at The Reptile Database

Illustrations

Worked examples

Example 1 — a first encounter with Xenosaurus

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

In research: Xenosaurus 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 Xenosaurus 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: Xenosaurus is common in secondary-school and first-year university syllabi. It links to neighbouring topics Lizard genera, Lizard stubs, Taxa named by Wilhelm Peters, so understanding it makes those chapters shorter.
In everyday life: Look for Xenosaurus 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.

Ask Teacher Smith questions about this articleOpens your AI tutor with a question about “Xenosaurus” →

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Xenosaurus in 20 minutes

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

Frequently asked questions

What is Xenosaurus in simple terms?

Why does Xenosaurus 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 Xenosaurus?

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 Xenosaurus.