Berthellina quadridens
species of mollusc

Berthellina quadridens is a species of sea slug, a marine gastropod mollusc in the family Pleurobranchidae.
Distribution
Distribution of Berthellina quadridens includes Mexico, Belize, Colombia, Costa Rica, Panama, Venezuela, Aruba, Curaçao, Haiti, Jamaica, Puerto Rico, Virgin Islands, Sint Maarten, St. Lucia, Guadeloupe, Martinique, Barbados, St. Vincent and the Grenadines, Grenada, Trinidad and Tobago, Brazil.
The type locality is Saint Thomas, U.S. Virgin Islands.
Description
The body is oval and inflated. Dorsum is smooth, covering the internal shell, which is located over the anterior portion of the viscera. The anterior end of the body has a large oral veil. Rhinophores are rolled, emerging between the veil and the dorsum. The color is yellow to orange, semi-translucent.
“Berthellina quadridens” enters the record as species of mollusc. Crown Archives preserves that source wording while asking what Berthellina, quadridens and species can confirm, complicate or overturn.
Why this record matters
“Berthellina quadridens” is worth following because a concise public description often conceals a longer documentary argument. Here, Berthellina, quadridens and species provides the most credible route into that argument.
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 12, 2026. The linked authority identifier is Q5068922. 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 “Berthellina quadridens”, its source revision and the description used here.
- Expand the search: follow Berthellina quadridens primary sources, Berthellina quadridens archive and Berthellina 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 “Berthellina quadridens”?
- Has classification or technical consensus changed since the cited source?
- Which observation, specimen, dataset or publication supports the account?
Search terms from this dossier
This entry incorporates text from “Berthellina quadridens” 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.