earth science

Meretrix (bivalve)

Meretrix (bivalve) 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 Meretrix (bivalve) rather than just read about it. In short: Meretrix is a genus of edible saltwater clams, marine bivalve molluscs in the family Veneridae, the Venus clams. The genus first appeared in the fossil record during the Cenomanian.

Key takeaways

Meretrix (bivalve) 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 Meretrix (bivalve) to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Meretrix (bivalve) from memory before moving on to harder problems.

Reference excerpt

Meretrix is a genus of edible saltwater clams, marine bivalve molluscs in the family Veneridae, the Venus clams. The genus first appeared in the fossil record during the Cenomanian.

Genomics Chromosome-level genome assemblies of Meretrix lamarckii and Meretrix meretrix, providing the first reference genomes for those species, were published in 2026. The genomes are approximately 891 Mb and 835 Mb in size, respectively, and each comprises 19 pseudochromosomes. A telomere-to-telomere genome assembly of Meretrix taiwanica, providing the first reference genome for the species, was published in 2026. The haplotype-resolved assemblies are approximately 1.01 Gb in size and each comprises 19 pseudochromosomes.

Species Species in the genus Meretrix include:

Meretrix lamarckii Meretrix meretrix Meretrix lusoria Meretrix lyrata Meretrix taiwanica †Meretrix chalcedonica, early Danian Lefipán Formation, Cañadón Asfalto Basin, Argentina †Meretrix dalli, Paleocene Martinez Formation of California †Meretrix faba, Cenomanian Khatiyah Formation of the United Arab Emirates †Meretrix hikoshimensis, Oligocene Ashiya Group of Japan †Meretrix hornii, Paleocene to Eocene California †Meretrix indica, Paleocene Hangu Shales of Pakistan †Meretrix negritosensis, Miocene Zorritos Formation of Peru †Meretrix nuttalliopsis, Eocene Boca de Serpiente Formation of Trinidad and Tobago †Meretrix persica, Miocene of Iran and India †Meretrix shantii, Eocene Umm al-Rua'us Formation of Saudi Arabia †Meretrix stantoni, Paleocene California †Meretrix subimpressa, Eocene Trinidad and Tobago and Maryland †Meretrix uvasana, Paleocene to Eocene California

References

Further reading Reid, Shannon (2003). "Meretrix lyrata (Soweby, 1851)". Archived from the original on 2007-10-23. OBIS Indo-Pacific Molluscan Database, Academy of Natural Sciences.

Illustrations

Worked examples

Example 1 — a first encounter with Meretrix (bivalve)

Start with the simplest possible case. Write down what Meretrix (bivalve) 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 Meretrix (bivalve) 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 Meretrix (bivalve) 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 Meretrix (bivalve)

In research: Meretrix (bivalve) 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 Meretrix (bivalve) 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: Meretrix (bivalve) is common in secondary-school and first-year university syllabi. It links to neighbouring topics Bivalve genera, Extant Cenomanian first appearances, Molluscs described in 1799, so understanding it makes those chapters shorter.
In everyday life: Look for Meretrix (bivalve) 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 Meretrix (bivalve) in 20 minutes

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

Frequently asked questions

What is Meretrix (bivalve) in simple terms?

Meretrix is a genus of edible saltwater clams, marine bivalve molluscs in the family Veneridae, the Venus clams. The genus first appeared in the fossil record during the Cenomanian.

Why does Meretrix (bivalve) 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 Meretrix (bivalve)?

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 Meretrix (bivalve).