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Research dossier · Science & Nature

Birdshill Quarry

limestone quarry now a Site of Special Scientific Interest in Carmarthenshire, Wales

Specimen drawers, botanical folios and brass scientific instruments under study light
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Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionJul 8, 2026
Entity authorityQ4916139 ↗
Source-derived summary

Birdshill Quarry is a Site of Special Scientific Interest (SSSI) in Carmarthenshire, Wales.

SSSI

Birdshill Quarry SSSI is located approximately 1.8 miles (2.9 km) west of Llandeilo, and covers 0.4 hectares (0.99 acres).

The SSSI citation for Birshill Quarry specifies the importance of the site to be the abundant fossils of trilobites, brachiopods and bivalves in an Ashgill Birdshill Limestone strata of the quarry, incorporated as deposits some 425 million years ago. The site has been dated by reference to microfossil conodonts found in the strata.

Editorial summary

This brief starts where responsible research should: with the source description of “Birdshill Quarry” as limestone quarry now a Site of Special Scientific Interest in Carmarthenshire, Wales. Everything that follows is an evidence route, not borrowed authority.

Editorial reviewA sound reference starting point where classification, measurement and the date of the underlying evidence remain visible. The current 86-word lead offers orientation but no explicit four-digit date, so chronology should not be assumed. The linked authority record independently contributes the date 1984. The account is most persuasive where Birdshill, Quarry and limestone can be independently traced.
Editorial analysis

Why this record matters

The subject matters to the science & nature register because the source frames it as limestone quarry now a Site of Special Scientific Interest in Carmarthenshire, Wales. Its deeper value depends on whether names, dates, institutions and citations support that framing.

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 Jul 8, 2026. The linked authority identifier is Q4916139. Authority coordinates are 51.889, -4.033. 2 of 2 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank.

Critical limits

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.

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 “Birdshill Quarry”, its source revision and the description used here.
  2. Expand the search: follow Birdshill Quarry primary sources, Birdshill Quarry archive and Birdshill 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 “Birdshill Quarry”?
  2. Has classification or technical consensus changed since the cited source?
  3. Is the terminology current, historical or disputed?
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Source & attribution

This entry incorporates text from “Birdshill Quarry” 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.