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Amethyst gem clam

species of mollusc

Specimen drawers, botanical folios and brass scientific instruments under study light
Science and natureInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionJul 31, 2024
Entity authorityQ3014197 ↗
Source-derived summary

The amethyst gem clam (Gemma gemma) is species of very small saltwater clam, a marine bivalve mollusk in the family Veneridae, the Venus clams.

It is a small species, reaching a length of only 5 mm. The shell color is whitish or grayish, suffused with purple on both outer and inner surfaces.

The species is native to the Atlantic coast of North America, from Labrador to Texas, but it is now also found as an introduced species in some locations on the Pacific coast.

Editorial summary

Begin with the source’s own compact description: “Amethyst gem clam” is species of mollusc. The dossier treats that line as a proposition to test through Amethyst, clam and species, not as a finished interpretation.

Editorial reviewUseful for establishing the present vocabulary of the subject while preserving a route back to the evidence on which that vocabulary rests. The current 84-word lead offers orientation but no explicit four-digit date, so chronology should not be assumed. The selected authority fields contribute no independent date. For this dossier, Amethyst, clam and species is the immediate research focus.
Editorial analysis

Why this record matters

The phrase “species of mollusc” 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.

Evidence profile

The date and method of observation matter as much as the stated conclusion, especially where classification or consensus has changed. The source revision retrieved here is dated Jul 31, 2024. The linked authority identifier is Q3014197. None of the 0 selected statements returned an explicit reference.

Critical limits

Scientific names, classifications and consensus can change while older terminology persists in catalogues and historical literature. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. 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.

Best used for
  • Current terminology
  • Classification context
  • Finding cited technical literature
Verify next

Primary datasets, specimen catalogues, standards bodies and the most recent peer-reviewed literature.

Three-step research path

  1. Establish the record: confirm the title “Amethyst gem clam”, its source revision and the description used here.
  2. Expand the search: follow Amethyst gem clam primary sources, Amethyst gem clam archive and Amethyst research across catalogues and specialist indexes.
  3. Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.

Questions for further research

  1. Which source most directly establishes the central claim about “Amethyst gem clam”?
  2. Which observation, specimen, dataset or publication supports the account?
  3. Is the terminology current, historical or disputed?
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Source & attribution

This entry incorporates text from “Amethyst gem clam” 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.