biology

Tiamat valdecii

Tiamat valdecii 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 Tiamat valdecii rather than just read about it. In short: Tiamat (after the Mesopotamian mythical goddess) is an extinct genus of titanosaurian sauropod dinosaur from the 'mid'-Cretaceous Açu Formation of Brazil. The genus contains a single species, T. valdecii, known from several caudal vertebrae.

Key takeaways

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

Reference excerpt

Tiamat (after the Mesopotamian mythical goddess) is an extinct genus of titanosaurian sauropod dinosaur from the 'mid'-Cretaceous Açu Formation of Brazil. The genus contains a single species, T. valdecii, known from several caudal vertebrae.

Discovery and naming The Tiamat holotype specimen was discovered in sediments of the Açu Formation in the Potiguar Basin of Ceará state, Brazil. The specimen consists of nine fragmentary caudal vertebrae from the beginning and middle of the tail, deposited in the Federal University of Rio de Janeiro. An isolated titanosaur osteoderm described in 2018, specimen UFRJ-DG 549-R, was tentatively suggested to also have come from Tiamat. In 2024, Pereira et al. described Tiamat valdecii as a new genus and species of basal titanosaur based on these fossil remains. The generic name, Tiamat, references Tiamat—the serpentine or draconic goddess of Sumerian and Babylonian mythology—who traditionally represents the mother of mythical beings, hinting at the basal phylogenetic position of the dinosaur. The specific name, valdecii, honors Dr. Valdeci dos Santos Júnior, the discoverer of the type locality. Tiamat represents the first dinosaur to be named from the Potiguar Basin of Brazil, although the indeterminate remains of other dinosaurs have been found.

Classification

In their phylogenetic analyses, Pereira (2024) recovered Tiamat as a basal titanosaur, as the sister taxon to the similarly aged Andesaurus. Their results are displayed in the cladogram below:

References

Illustrations

Worked examples

Example 1 — a first encounter with Tiamat valdecii

Start with the simplest possible case. Write down what Tiamat valdecii 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 Tiamat valdecii 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 Tiamat valdecii 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 Tiamat valdecii

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

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

Frequently asked questions

What is Tiamat valdecii in simple terms?

Why does Tiamat valdecii 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 Tiamat valdecii?

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 Tiamat valdecii.