science

Trigonostylops

Trigonostylops is a science 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 Trigonostylops rather than just read about it. In short: Trigonostylops is an extinct genus of South American meridiungulatan ungulate, from the Late Paleocene to Late Eocene (Itaboraian to Tinguirirican in the SALMA classification) of South America (Argentina and Peru) and Antarctica (Seymour Island). It is the only member of the family Trigonostylopidae.

Key takeaways

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

Reference excerpt

Trigonostylops is an extinct genus of South American meridiungulatan ungulate, from the Late Paleocene to Late Eocene (Itaboraian to Tinguirirican in the SALMA classification) of South America (Argentina and Peru) and Antarctica (Seymour Island). It is the only member of the family Trigonostylopidae.

Description

A complete skull of the type species, T. wortmani, has been found, and it has been classified as an astrapothere based on its large lower incisors.

Phylogeny Cladogram based in the phylogenetic analysis published by Vallejo Pareja et al., 2015, showing the position of Trigonostylops:

Distribution

Fossils of Trigonostylops have been found in:

Paleocene Las Flores Formation, Argentina Eocene La Meseta Formation, Antarctica Casamayor, Divisadero Largo, Koluel Kaike and Sarmiento Formations, Argentina Pozo Formation, Peru

References

Bibliography Antoine, P.O.; Marivaux, L.; Croft, D.A.; Billet, G.; Ganerod, M.; Jaramillo, C.; Martin, T.; Orliac, M.; Tejada, J.; Altamirano, A. J.; Duranthon, F.; Fanjat, G.; Rousse, S.; Salas Gismondi, R. (2011). "Middle Eocene rodents from Peruvian Amazonia reveal the pattern and timing of caviomorph origins and biogeography". Proceedings of the Royal Society B. 279 (1732): 1319–1326. doi:10.1098/rspb.2011.1732. PMC 3282368. PMID 21993503. S2CID 26368929. Retrieved 2019-02-14. Cifelli, R (1985). "Biostratigraphy of the Casamayoran, Early Eocene of Patagonia" (PDF). American Museum Novitates (2820): 1–26. Retrieved 2019-02-14. Dzik, J.; Gaździcki, A. (2001). "The Eocene expansion of nautilids to high latitudes" (PDF). Palaeogeography, Palaeoclimatology, Palaeoecology. 172 (3–4): 297–312. Bibcode:2001PPP...172..297D. doi:10.1016/S0031-0182(01)00304-2. Retrieved 2019-02-14. Goin, F.J.; Candela, A.M.; Abello, M.A.; Oliveira, E.V. (2009). "Earliest South American paucituberculatans and their significance in the understanding of 'pseudodiprotodont' marsupial radiations". Zoological Journal of the Linnean Society. 155 (4): 867–884. doi:10.1111/j.1096-3642.2008.00471.x. S2CID 84131123. Retrieved 2019-02-14. Vallejo Pareja, M.C.; Carrillo, J.D.; Moreno Bernal, J.W.; Pardo Jaramillo, M.; Rodríguez González, D.F.; Muñoz Duran, J. (2015). "Hilarcotherium castanedaii, gen. et sp. nov., a new Miocene astrapothere (Mammalia, Astrapotheriidae) from the Upper Magdalena Valley, Colombia" (PDF). Zurich Open Repository and Archive, University of Zurich. 35 (2): 1–14. Bibcode:2015JVPal..35E3960V. doi:10.1080/02724634.2014.903960. S2CID 130728894. Retrieved 2019-02-14. Vera, B (2012). "Revisión del género Transpithecus Ameghino, 1901 (Notoungulata, Interatheriidae) del Eoceno medio de Patagonia, Argentina". Ameghiniana. 49: 60–74. doi:10.5710/AMGH.v49i1(361). S2CID 130102948. Retrieved 2019-02-14.

Illustrations

Worked examples

Example 1 — a first encounter with Trigonostylops

Start with the simplest possible case. Write down what Trigonostylops claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, 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 Trigonostylops 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 Trigonostylops 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 Trigonostylops

In research: Trigonostylops appears in science 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 Trigonostylops 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: Trigonostylops is common in secondary-school and first-year university syllabi. It links to neighbouring topics Astrapotheria, Casamayoran, Divisaderan, so understanding it makes those chapters shorter.
In everyday life: Look for Trigonostylops 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 Trigonostylops in 20 minutes

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

Frequently asked questions

What is Trigonostylops in simple terms?

Why does Trigonostylops matter?

Because it connects several science 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 Trigonostylops?

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 Trigonostylops.