biology

Silvisaurus

Silvisaurus 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 Silvisaurus rather than just read about it. In short: Silvisaurus, from the Latin silva "woodland" and Greek sauros "lizard", is a nodosaurid ankylosaur from the Early to Late Cretaceous period. It is the only known dinosaur species named from terrestrial deposits in Kansas and was designated the official state land fossil in 2023.

Key takeaways

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

Reference excerpt

Silvisaurus, from the Latin silva "woodland" and Greek sauros "lizard", is a nodosaurid ankylosaur from the Early to Late Cretaceous period. It is the only known dinosaur species named from terrestrial deposits in Kansas and was designated the official state land fossil in 2023.

Discovery and species

A fossil of the species was discovered in the 1950s by rancher Warren W. Condray of Wells, Kansas. He notified senator Frank Carlson who directed him to the chancellor of the University of Kansas, Franklin David Murphy. Murphy sent the preparator of the paleontology of vertebrates department of the natural history museum of the university, Russell R. Camp, to investigate the matter. In July 1955 Camp, with help from Condray, recovered the skeleton of a dinosaur. It was further prepared by Camp and Glenn H. Marihugh. In 1960 the find was described and named by Theodore H. Eaton Jr., also from the University of Kansas, as the type species Silvisaurus condrayi. The generic name is derived from Latin silva, "wood", in reference to the probably densely forested habitat of the animal. The specific name honours Condray. To date, Silvisaurus includes only the type species. The holotype, KU 10296, was found in exposures of the Terra Cotta Clay Member of the Dakota Formation (late Albian-early Cenomanian) in Kansas, and consists of an incomplete skeleton with skull. It includes the mandible, eight neck vertebrae, ten dorsal vertebrae, a sacrum of six sacral vertebrae, three tail vertebrae, a left pubis fragment, the lower end of the right femur, and a toe phalanx. Additionally disarticulated plates and spikes from the body armour were discovered. The condition of the fossil was poor as the bones had been exposed at the bottom of a dry riverbed and had been weathered and trampled by cattle. Some elements were only present as impressions or natural casts.

Description Based on the remains, the animal is estimated to have been approximately 4 metres (13 ft) in length. Its skull measures 33 centimetres (13 in) in length and is 25 centimetres (9.8 in) wide. The bony secondary palate is poorly developed in Silvisaurus, the dentary includes at least twenty-five teeth, the basal tubera of the basioccipital are bulbous, and each premaxilla holds eight to nine teeth. The presence of teeth at the front of the jaw suggests that this may have been a relatively primitive nodosaur, since most later forms had a toothless beak instead. In addition to the usual rounded and polygonal osteoderms, Silvisaurus may have also sported bony spines on its shoulders and tail. The head contained large air passages, which may have been used for loud vocalisations, presumably for communication.

Classification This taxon represents a relatively primitive nodosaurid, and Vickaryous et al. (2004) have stated that "Sauropelta edwardsorum, Silvisaurus condrayi, and Pawpawsaurus campbelli form a basal polytomy nested deep to Cedarpelta."

Illustrations

Worked examples

Example 1 — a first encounter with Silvisaurus

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

In research: Silvisaurus 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 Silvisaurus 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: Silvisaurus is common in secondary-school and first-year university syllabi. It links to neighbouring topics Albian dinosaurs, Cenomanian dinosaurs, Dinosaur genera, so understanding it makes those chapters shorter.
In everyday life: Look for Silvisaurus 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 Silvisaurus in 20 minutes

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

Frequently asked questions

What is Silvisaurus in simple terms?

Why does Silvisaurus 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 Silvisaurus?

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 Silvisaurus.