biology

Priconodon

Priconodon 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 Priconodon rather than just read about it. In short: Priconodon (meaning "saw cone tooth") is an extinct genus of ankylosaurian dinosaur (perhaps nodosaurid), mainly known from its large teeth. Its remains have been found in the Early Cretaceous (Aptian-Albian age) Arundel Formation of Muirkirk, Prince George's County, Maryland, USA, and possibly the Potomac Group, also located in Maryland.

Key takeaways

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

Reference excerpt

Priconodon (meaning "saw cone tooth") is an extinct genus of ankylosaurian dinosaur (perhaps nodosaurid), mainly known from its large teeth. Its remains have been found in the Early Cretaceous (Aptian-Albian age) Arundel Formation of Muirkirk, Prince George's County, Maryland, USA, and possibly the Potomac Group, also located in Maryland. As an ankylosaur, Priconodon would have been a large armored quadrupedal herbivore, though no size estimation has been done due to the scarcity of described remains.

History of discovery O. C. Marsh named the genus for USNM 2135, a large worn tooth from what was then called the Potomac Formation. As ankylosaurians were by and large unknown at the time, he compared it to Diracodon (=Stegosaurus) teeth. It was not identified as an ankylosaurian until Walter Coombs assigned it to Nodosauridae in 1978. In 1998 Kenneth Carpenter and James Kirkland, in a review of North American Lower Cretaceous ankylosaurs, considered it tentatively valid as an unusually large nodosaurid, larger than all those described before. Carpenter (2001) retained it as a valid nodosaurid, but did not employ it in his phylogenetic analysis. Vickaryous et al. (2004), in a review of armored dinosaurs, considered it to be dubious without comment. West and Tibert, however, followed this with a preliminary account of a morphometric study that found it to be a unique genus.

Additional specimens Carpenter and Kirkland (1998) listed 12 additional teeth from the same area as the holotype tooth, and tentatively added a robust tibia (USNM 9154) to the genus. They found the lack of armor found in the Arundel to be peculiar, but noted that fossils are rare in that formation anyway. In 2018, three new ankylosaur teeth described from the Potomac Formation were assigned to Priconodon crassus based on their similarity to the holotype. In 2023, large ankylosaur fossils (including a vertebra and a osteroderms) were announced to be found at Dinosaur Park by John-Paul Hodnett, which may potentially represent additional specimens of Priconodon.

Illustrations

Worked examples

Example 1 — a first encounter with Priconodon

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

In research: Priconodon 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 Priconodon 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: Priconodon is common in secondary-school and first-year university syllabi. It links to neighbouring topics Aptian dinosaurs, Dinosaur genera, Dinosaurs of the United States, so understanding it makes those chapters shorter.
In everyday life: Look for Priconodon 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 Priconodon in 20 minutes

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

Frequently asked questions

What is Priconodon in simple terms?

Why does Priconodon 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 Priconodon?

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 Priconodon.