earth science

Tonna allium

Tonna allium is a earth 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 Tonna allium rather than just read about it. In short: Tonna allium, common name the costate tun, is a species of large sea snail, a marine gastropod mollusk in the family Tonnidae, the tun shells. Description The length of an adult shell varies between 50 mm and 131 mm.

Key takeaways

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

Reference excerpt

Tonna allium, common name the costate tun, is a species of large sea snail, a marine gastropod mollusk in the family Tonnidae, the tun shells.

Description The length of an adult shell varies between 50 mm and 131 mm.

Distribution This species occurs in the Indian Ocean off Madagascar, the Mascarene Basin and Mauritius.

References

Martin, K. (1879-1880). Die Tertiärschichten auf Java, nach den Entdeckungen von Fr. Junghuhn. Leiden: Brill. [Paleontologischer Theil, 1–126 (1879); 127–164, i–vi (plate captions) (1880); Allgemeiner Theil, 1–51 (1880); Anhang, 1–6 (1880); Title page and Vorwort, i–ix, Smith, E. A. 1906. On South African marine Mollusca, with descriptions of new species. Annals of the Natal Government Museum 1:19-71, pls. 7-8 Dautzenberg, Ph. (1929). Mollusques testacés marins de Madagascar. Faune des Colonies Francaises, Tome III Cernohorsky. W. O. (1972). Marine Shells of the Pacific. Vol. II. Pacific Publications, Sydney, 411 pp. Drivas, J. & M. Jay (1988). Coquillages de La Réunion et de l'île Maurice Michel, C. (1988). Marine molluscs of Mauritius. Editions de l'Ocean Indien. Stanley, Rose Hill. Mauritius Bozzetti L. & Ferrario M. (2005) Three new species and a new subspecies from the South-Western Indian Ocean (Gastropoda: Prosobranchia: Turbinidae, Tonnidae, Buccinidae, Conidae). Visaya 1(4): 51–58. [April 2005] Steyn, D. G.; Lussi, M. (2005). Offshore Shells of Southern Africa: A pictorial guide to more than 750 Gastropods. Published by the authors. pp. i–vi, 1–289. Beu, A. G. (2005) Neogene fossil tonnoidean gastropods of Indonesia. Scripta Geologica 130, p. 1-186, pp. 166, figs. 327 Vos, C. (2007). A conchological Iconography (No. 13) - The family Tonnidae. 123 pp., 30 numb. plus 41 (1 col.) un-numb. text-figs, 33 maps., 63 col. pls, Conchbooks, Germany Vos, C. (2008) Tonnidae. in Poppe G.T. (ed.) Philippine Marine Mollusks, Volume 1: Gastropoda 1: 594–611, pls 242–250. Conchbooks, Hackenheim, Germany. Liu, J.Y. [Ruiyu] (ed.). (2008). Checklist of marine biota of China seas. China Science Press. 1267 pp. Vos, C. (2012) Overview of the Tonnidae (MOLLUSCA: GASTROPODA) in Chinese waters. Shell Discoveries 1(1); pp. 12–22; Pls. 1-9 Vos, C. (2013) Overview of the Tonnidae (Mollusca: Gastropoda) in Chinese waters. Gloria Maris 52(1-2); pp. 22–53; Pls. 1-9 Severns, M. (2011). Shells of the Hawaiian Islands - The Sea Shells. Conchbooks, Hackenheim. 564 pp.

External links

gastropods.com : Tonna (Dolium complex) allium; accessed : 26 April 2011 Menke, K. T. (1828). Synopsis methodica molluscorum generum omnium et specierum earum, quae in Museo Menkeano adservantur; cum synonymia critica et novarum specierum diagnosibus. XII + 91 pp. Dillwyn, 1817. A descriptive catalogue of Recent shells, arranged according to the Linnean method; with particular attention to the synonymy. London: John and Arthur Arch. Vol. 1: 1-580; Vol. 2: 581-1092 + index Röding, P. F. (1798). Museum Boltenianum sive Catalogus cimeliorum e tribus regnis naturæ quæ olim collegerat Joa. Fried Bolten, M. D. p. d. per XL. annos proto physicus Hamburgensis. Pars secunda continens Conchylia sive Testacea univalvia, bivalvia & multivalvia. Trapp, Hamburg. viii, 199 pp. Schröter, J. S. in Martini, F.H.W. (1788) Vollstandiges alphabetisches Namen-Register über alle Zehn Bande des von dem feel. Herrn D. Martini in Berlin angefangenen, und vom Herrn Pastor Chemnitz in Kopenhagen fortgesetzten und vollenbeten Systematisches Conchylien-Cabinets. Nürnberg, in der Rasplichen Buchhandlung, 1788 Martini, F. H. W. (1777) Neues systematisches Conchylien-Cabinet. Nach der Natur gezeichnet und mit lebendigen Farben erleuchtet. III Hanley, S. (1860). Systematic list of the species of Dolium restricted. Proceedings of the Zoological Society of London. 1859, 27: 487-493. Boettger, O. (1883). Mollusca. In Verbeek, R. D. M., Boettger, O. & von Fritsch, K. (Eds.) Die Tertiärformation von Sumatra und ihre Thierreste. Palaeontographica, Supplement. 3(10/11), pp. 1-151 Deshayes, G. P. & Milne-Edwards, H. (1844). Histoire naturelle des animaux sans vertèbres, présentant les caractères généraux et particuliers de ces animaux, leur distribution, leurs classes, leurs familles, leurs genres, et la citation des principales espèces qui s'y rapportent, par J. B. P. A. de Lamarck. Deuxième édition, Tome dixième. Histoire des Mollusques. J. B. Baillière: Paris. 638 pp.

Illustrations

Worked examples

Example 1 — a first encounter with Tonna allium

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

In research: Tonna allium appears in earth 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 Tonna allium 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: Tonna allium is common in secondary-school and first-year university syllabi. It links to neighbouring topics Gastropods described in 1817, Molluscs of the Indian Ocean, Taxa named by Lewis Weston Dillwyn, so understanding it makes those chapters shorter.
In everyday life: Look for Tonna allium 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 “Tonna allium” →

Affiliate

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

How to study Tonna allium in 20 minutes

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

Frequently asked questions

What is Tonna allium in simple terms?

Tonna allium, common name the costate tun, is a species of large sea snail, a marine gastropod mollusk in the family Tonnidae, the tun shells. Description The length of an adult shell varies between 50 mm and 131 mm.

Why does Tonna allium matter?

Because it connects several earth 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 Tonna allium?

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 Tonna allium.