biology

Striatolamia

Striatolamia 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 Striatolamia rather than just read about it. In short: Striatolamia is an extinct genus of sharks belonging to the family Odontaspididae. These extinct sharks lived from the Early Paleocene to Late Miocene (61.7 to 10.3 Ma).

Key takeaways

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

Reference excerpt

Striatolamia is an extinct genus of sharks belonging to the family Odontaspididae. These extinct sharks lived from the Early Paleocene to Late Miocene (61.7 to 10.3 Ma).

Etymology The Latin genus name Striatolamia refers to the striations on the surface of the teeth.

Taxonomy This genus had been assigned to families Mitsukurinidae and Striatolamiidae by other authors. Similar and related genera include Carcharoides, Parodontaspis, Priodontaspis, Pseudoisurus and Synodontaspis.

Species Species within this genus include:

Striatolamia macrota Agassiz 1843 Striatolamia striata (Winkler 1874) Striatolamia whitei (Arambourg, 1952)

Description Striatolamia species could reach a length of about 350 centimetres (140 in). Its teeth are notably big and rather common in sediments. The anterior teeth have elongated crowns, with striations on the lingual face and small lateral cusplets. The lateral teeth are smaller and broader, with weaker striations. S. macrota anterior teeth have smaller roots than S. striata, and they are often recurved. Another difference between these two species is the length of their teeth. Teeth of striata are generally smaller (13 to 51 millimetres (0.51 to 2.01 in)) than macrota (19 to 38 millimetres (0.75 to 1.50 in)).

Distribution and habitat Most widespread species of Striatolamia are S. striata and S. macrota. Fossil teeth and calcified vertebrae of Striatolamia species have been found all over the world. These sharks lived in waters with low salinity.

Illustrations

Worked examples

Example 1 — a first encounter with Striatolamia

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

In research: Striatolamia 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 Striatolamia 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: Striatolamia is common in secondary-school and first-year university syllabi. It links to neighbouring topics Eocene animals of South America, Eocene cartilaginous fish, Fossil taxa described in 1964, so understanding it makes those chapters shorter.
In everyday life: Look for Striatolamia 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 “Striatolamia” →

Affiliate

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

How to study Striatolamia in 20 minutes

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

Frequently asked questions

What is Striatolamia in simple terms?

Striatolamia is an extinct genus of sharks belonging to the family Odontaspididae. These extinct sharks lived from the Early Paleocene to Late Miocene (61.7 to 10.3 Ma).

Why does Striatolamia 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 Striatolamia?

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 Striatolamia.