biology

Neochelys

Neochelys 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 Neochelys rather than just read about it. In short: Neochelys (Greek for "new turtle") is an extinct genus of freshwater side-necked turtle that inhabited Europe during the Eocene. It was a diverse genus known throughout western and southern Europe from the Ypresian to the Priabonian.

Key takeaways

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

Reference excerpt

Neochelys (Greek for "new turtle") is an extinct genus of freshwater side-necked turtle that inhabited Europe during the Eocene. It was a diverse genus known throughout western and southern Europe from the Ypresian to the Priabonian.

Taxonomy The following species are known:

†N. arenarum de Broin, 1977 – early-mid Ypresian of France (Lignites de Soissonais) †N. arribasi (Jiménez-Fuentes, 1975) - Bartonian or Priabonian of Spain (Aldearrubia Formation) †N. capellinii (de Zigno, 1890) (type species) – latest Ypresian or earliest Lutetian of Italy (Monte Bolca) (=Emys capellinii) †N. eocaenica (de Stefano, 1902) – latest Ypresian or earliest Lutetian of France (Grès d'Aigne Formation) †N. franzeni Schleich, 1993 – early Lutetian of Germany (Messel Formation) †N. laurenti Tong, 1998 – mid-late Ypresian of France (Saint-Papoul Formation) †N. liriae Pérez-García & de Broin, 2013 – mid-late Ypresian of France (Grès d'Assignan Formation) †N. salmanticensis Jiménez-Fuentes, 1971 – Bartonian of Spain (=Podocnemis carbajosai) †N. zamorensis Jiménez-Fuentes, 1992 – late Lutetian of Spain (Entrala Formation)

Indeterminate remains are known from the latest Eocene (Priabonian) of France and Spain; these have not been assigned to a specific species, but represent the youngest record of the genus. The species "N." fajumensis from the Oligocene of Egypt was briefly assigned to this genus, but is now thought to belong to its own genus, Shetwemys. Morphological analyses suggest that Neochelys likely represents an ancient lineage of the Erymnochelyinae, sister to the clade composed of the South American Peltocephalus and the Malagasy Erymnochelys. The taxonomic relationships between the multiple Neochelys species remain largely unknown. It has been suggested that N. eocaenica, N. capellinii, and N. salmanticensis together form a species complex known as the "N. eocaenica complex", but this is uncertain.

Palaeopathology A Neochelys sp. specimen exhibiting pelvic asymmetry has been found in the Duero Basin. Potential causes, none of which can be ruled out, of this palaeopathology include metabolic bone disease, a developmental abnormality, or some sort of traumatic injury.

Ecology A pathological Neochelys shell is known from the middle Eocene of Spain, hosting abnormalities that were previously thought to be the result of a crocodile attack. However, more recent studies instead suggest that these may instead occurred from parasites or a bacterial/fungal infection.

References

Illustrations

Worked examples

Example 1 — a first encounter with Neochelys

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

In research: Neochelys 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 Neochelys 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: Neochelys is common in secondary-school and first-year university syllabi. It links to neighbouring topics Bartonian genera, Eocene reptiles of Europe, Eocene turtles, so understanding it makes those chapters shorter.
In everyday life: Look for Neochelys 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 Neochelys in 20 minutes

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

Frequently asked questions

What is Neochelys in simple terms?

Why does Neochelys 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 Neochelys?

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 Neochelys.