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Sphaerium transversum

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 revisionAug 31, 2026
Entity authorityQ540592 ↗
Source-derived summary

Sphaerium transversum is a species of freshwater bivalve from the family Sphaeriidae. It is found in North America and Europe. It occurs in lakes, rivers, canals, and swamps.

Distribution

Sphaerium transversum is widely distributed in North America (Mexico, USA, Canada). It also occurs in Western Europe (France, UK, the Netherlands and Germany) where it is an introduced species.

Editorial summary

“Sphaerium transversum” enters the record as species of mollusc. Crown Archives preserves that source wording while asking what Sphaerium, transversum and species can confirm, complicate or overturn.

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 58-word lead offers orientation but no explicit four-digit date, so chronology should not be assumed. The selected authority fields contribute no independent date. Its strongest next move is a source search built around Sphaerium, transversum and species.
Editorial analysis

Why this record matters

“Sphaerium transversum” is worth following because a concise public description often conceals a longer documentary argument. Here, Sphaerium, transversum and species provides the most credible route into that argument.

Evidence profile

Stable identifiers, scientific names and standards terminology offer the best bridge between this overview and specialist evidence. The source revision retrieved here is dated Aug 31, 2026. The linked authority identifier is Q540592. None of the 0 selected statements returned an explicit reference.

Critical limits

Current terminology should not be projected backward without checking the classification used when the underlying evidence was created. 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 “Sphaerium transversum”, its source revision and the description used here.
  2. Expand the search: follow Sphaerium transversum primary sources, Sphaerium transversum archive and Sphaerium 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 “Sphaerium transversum”?
  2. Which observation, specimen, dataset or publication supports the account?
  3. Has classification or technical consensus changed since the cited source?
Subject index

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Source & attribution

This entry incorporates text from “Sphaerium transversum” 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.