biology

Nemastomoides

Nemastomoides 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 Nemastomoides rather than just read about it. In short: Nemastomoides is an extinct genus of harvestmen known from the Carboniferous fossil record. The genus is the only member of the family Nemastomoididae and contains three described species.

Key takeaways

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

Reference excerpt

Nemastomoides is an extinct genus of harvestmen known from the Carboniferous fossil record. The genus is the only member of the family Nemastomoididae and contains three described species. Nemastomoides elaveris was found in the Coal Measures of Commentry in northern France, together with Eotrogulus fayoli. Alexander Petrunkevitch described two fossil harvestmen from Mazon Creek, Illinois, United States, in 1913 in the genus Protopilio, but later synonymized the two with the genus Nemastomoides. While N. longipes is a harvestman with long legs and a segmented oval body, N. depressus is in reality not a harvestman, but a poorly preserved phalangiotarbid. While the Nemastomoididae are currently included in the harvestman suborder Dyspnoi, they look more like Eupnoi.

Species Nemastomoides elaveris Thevenin, 1901 Nemastomoides longipes (Petrunkevitch, 1913) Not a harvestman, but a phalangiotarbid:

Nemastomoides depressus (Petrunkevitch, 1913)

Footnotes

References Joel Hallan's Biology Catalog: Nemastomoididae Thevenin, A. (1901): Sur la découverte d'arachnides dans le terrain houiller de Commentry. Bull Soc Géol. Fr. 4(1): 605-611. Petrunkevitch, A. I. (1955): Arachnida. pp. 42–162 in Treatise on Invertebrate Palaeontology, part P. Arthropoda 2 (R. C. Moore, ed.). Geological Society of America & University of Kansas Press, Lawrence. Pinto-da-Rocha, R., Machado, G. & Giribet, G. (eds.) (2007): Harvestmen - The Biology of Opiliones. Harvard University Press ISBN 0-674-02343-9

Worked examples

Example 1 — a first encounter with Nemastomoides

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

In research: Nemastomoides 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 Nemastomoides 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: Nemastomoides is common in secondary-school and first-year university syllabi. It links to neighbouring topics Carboniferous arachnids, Carboniferous arthropods, Fossils of the United States, so understanding it makes those chapters shorter.
In everyday life: Look for Nemastomoides 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 Nemastomoides in 20 minutes

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

Frequently asked questions

What is Nemastomoides in simple terms?

Nemastomoides is an extinct genus of harvestmen known from the Carboniferous fossil record. The genus is the only member of the family Nemastomoididae and contains three described species.

Why does Nemastomoides 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 Nemastomoides?

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 Nemastomoides.