Frenulina
genus of brachiopods
Frenulina is an extant genus of brachiopods, known from shallow waters in the warmer parts of the Pacific and Indian Oceans. Its shell is biconvex, rounded pentagonal in profile, and dependent on the species scarlet with creamy white radiating stripes of quickly varying width, beige or seldom entirely white. It lives attached by a stalk to a hard underground.
Species and distribution
Frenulina sanguinolenta has creamy white radiating stripes of quickly varying width on a scarlet shell, or is very rarely entirely white. It is very common in the western Pacific, including Australia, New Caledonia, French Polynesia, Philippines, China, Japan and Hawaii, but also occurs in the Indian Ocean.
F. cruenta is known from the Indian Ocean.
F. mauiensis occurs in Hawaii.
Begin with the source’s own compact description: “Frenulina” is genus of brachiopods. The dossier treats that line as a proposition to test through Frenulina, genus and brachiopods, not as a finished interpretation.
Why this record matters
The phrase “genus of brachiopods” 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.
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 Oct 9, 2024. The linked authority identifier is Q3543803. None of the 0 selected statements returned an explicit reference.
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.
- 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 “Frenulina”, its source revision and the description used here.
- Expand the search: follow Frenulina primary sources, Frenulina archive and Frenulina 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 “Frenulina”?
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This entry incorporates text from “Frenulina” 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.