science

Goulmimichthys

Goulmimichthys 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 Goulmimichthys rather than just read about it. In short: Goulmimichthys is an extinct genus of ray-finned fishes in the family Pachyrhizodontidae. The genus, first described by Cavin in 1995, is known from various Turonian age formations.

Key takeaways

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

Reference excerpt

Goulmimichthys is an extinct genus of ray-finned fishes in the family Pachyrhizodontidae. The genus, first described by Cavin in 1995, is known from various Turonian age formations. The type species G. arambourgi from the Akrabou Formation in the El Rachidia Province of Morocco, and other fossils described are G. gasparini of the La Frontera Formation, Colombia, and G. roberti from the Agua Nueva Formation of Mexico.

Etymology The genus name Goulmimichthys is a combination of the Greek ichthys, "fish" and Goulmima, the city in Morocco where the holotype fossils were found. The species epithet of the type species arambourgi refers to Camille Arambourg, a French paleontologist who worked in North Africa. The species epithet gasparini, given by María Páramo, honours Argentinian paleontologist Zulma Gasparini.

Description The anterior process of the pelvic bone of Goulmimichthys has the same length as the four central abdominal vertebrae, a typical characteristic of the genus. The species G. roberti is known from disarticulated and articulated specimens.

Distribution and habitat

Fossils of the type species of Goulmimichthys have been described from the Lower Turonian Akrabou Formation near Goulmima in eastern Morocco. Other species are described from the Turonian La Frontera Formation near Yaguará, Huila, in the Eastern Ranges of the Colombian Andes, and the Agua Nueva Formation of the Lagerstätte Vallecillo in northeastern Mexico. The fossil fishes were found in associations with other fossil genera, as in Mexico Nursallia gutturosum, Rhynchodercetis regio, Tselfatia formosa, Vallecillichthys multivertebratum, in Morocco Ghrisichthys and Enchodus, and in Colombia Pachyrhizodus etayoi and Bachea huilensis. Alongside the fossil fish assemblages, the fossils of plesiosaurs as Mauriciosaurus fernandezi and Vallecillosaurus donrobertoi in Mexico, the mosasaur Yaguarasaurus columbianus in Colombia and the basal mosasaur Tethysaurus nopcsai and turtles in Morocco were recovered.

References

Bibliography Alvarado Ortega, Jesús; Garibay Romero, Luis M.; Blanco Piñón, Alberto; González Barba, Gerardo; Vega, Francisco J.; Centeno García, Elena (2006), "Los peces fósiles de la Formación Mexcala (Cretácico Superior) en el Estado de Guerrero, México" (PDF), Revista Brasileira de Paleontologia, 9 (3): 261–272, doi:10.4072/rbp.2006.3.01, retrieved 2017-10-17 Bardet, Nathalie; Houssaye, Alexandra; Rage, Jean-Claude; Pereda Suberbiola, Xabier (2008), "The Cenomanian-Turonian (late Cretaceous) radiation of marine squamates (Reptilia): the role of the Mediterranean Tethys", Bulletin de la Société Géologique de France, 179 (6): 605–622, CiteSeerX 10.1.1.880.425, doi:10.2113/gssgfbull.179.6.605, retrieved 2017-10-17 {{citation}}: Cite uses deprecated parameter |citeseerx= (help)CS1 maint: miscellaneous url (link) Blanco, Alberto; Cavin, Lionel (2003), "New Teleostei from the Agua Nueva Formation (Turonian), Vallecillo (NE Mexico)", Comptes Rendus Palevol, 2 (5): 299–306, Bibcode:2003CRPal...2..299B, doi:10.1016/S1631-0683(03)00064-2, retrieved 2017-10-17 Castelblanco Cárdenas, Lilia Milena; Vásquez Salamanca, Luis Eduardo (2016), GeoFlash - Boletín Semanal Institucional (PDF), Servicio Geológico Colombiano, p. 1, retrieved 2017-10-17 Cavin, Lionel; Boudad, Larbi; Tong, Haiyan; Läng, Emilie; Tabouelle, Jérôme; Vullo, Romain (2015), "Taxonomic Composition and Trophic Structure of the Continental Bony Fish Assemblage from the Early Late Cretaceous of Southeastern Morocco", PLOS One, 10 (5) e0125786, Bibcode:2015PLoSO..1025786C, doi:10.1371/journal.pone.0125786, PMC 4446216, PMID 26018561 Cavin, Lionel (1995), "Goulmimichthys arambourgi n. g., n. sp., un Pachyrhizodontidae (Actinopterygii, Teleostei) d'une nouvelle localité à nodules fossilifères du Turonien inférieur marocain", Comptes Rendus de l'Académie des Sciences de Paris, 321: 1049–1054, retrieved 2017-10-17 González Rodríguez, Katia A.; Espinosa Arrubarrena, Luis; González Barba, Gerardo (2013), An overview of the Mexican fossil fish record (PDF), Mesozoic Fishes 5 – Global Diversity and Evolution, pp. 9–34, retrieved 2017-10-17 González Rodríguez, Katia A.; Arratia, Gloria (2010), Fifth International Meeting on Mesozoic Fishes - Global Diversity and Evolution - Abstract book and fieldguides (PDF), Universidad Autónoma del Estado de Hidalgo, pp. 1–141, retrieved 2017-10-17 Ifrim, Christina (2006), The fossil Lagerstätte at Vallecillo, north-eastern Mexico: pelagic Plattenkalks related to Cenomanian-Turonian boundary anoxia (PhD thesis), Universität Fridericiana Karlsruhe, pp. 1–151, retrieved 2017-10-17

Illustrations

Worked examples

Example 1 — a first encounter with Goulmimichthys

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

In research: Goulmimichthys 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 Goulmimichthys 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: Goulmimichthys is common in secondary-school and first-year university syllabi. It links to neighbouring topics Cretaceous Colombia, Cretaceous Mexico, Cretaceous Morocco, so understanding it makes those chapters shorter.
In everyday life: Look for Goulmimichthys 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 Goulmimichthys in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Goulmimichthys 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.
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Frequently asked questions

What is Goulmimichthys in simple terms?

Goulmimichthys is an extinct genus of ray-finned fishes in the family Pachyrhizodontidae. The genus, first described by Cavin in 1995, is known from various Turonian age formations.

Why does Goulmimichthys 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 Goulmimichthys?

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 Goulmimichthys.