Nucula
genus of molluscs
Nucula is a genus of very small saltwater clams. They are part of the family Nuculidae.
Fossil records
This genus is very ancient. Fossils are known from the Arenig to the Quaternary (age range: from 478.6 to 0.0 million years ago). Fossils are found in the marine strata all over the world.
Description
Shells of species within this genus can reach a size of about 30 millimetres (1.2 in). They are equivalve, symmetrical, approximately triangular. The surface has fine concentric growth lines. These clams live in the muddy sand close to the sediment surface at a depth of 20 to 200 meters.
Species
Nowadays there are still many species of this genus, which have had virtually no change in the course of time.
Begin with the source’s own compact description: “Nucula” is genus of molluscs. The dossier treats that line as a proposition to test through Nucula, genus and molluscs, not as a finished interpretation.
Why this record matters
The phrase “genus of molluscs” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.
Stable identifiers, scientific names and standards terminology offer the best bridge between this overview and specialist evidence. The source revision retrieved here is dated May 17, 2026. The linked authority identifier is Q127873. None of the 0 selected statements returned an explicit reference.
A general summary may omit uncertainty, sample limits or methodological disagreement that is explicit in the technical record. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Check terminology, classification and the date of the cited evidence. Scientific names and technical consensus can change while older records retain historical value.
- Current terminology
- Classification context
- Finding cited technical literature
Primary datasets, specimen catalogues, standards bodies and the most recent peer-reviewed literature.
Three-step research path
- Establish the record: confirm the title “Nucula”, its source revision and the description used here.
- Expand the search: follow Nucula primary sources, Nucula archive and Nucula research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Nucula”?
- Has classification or technical consensus changed since the cited source?
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Search terms from this dossier
This entry incorporates text from “Nucula” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.