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Common slow worm

species of reptile

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Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionSep 16, 2026
Entity authorityQ183660
Source-derived summary

The common slow worm (Anguis fragilis) is a non-venomous species of legless lizard native to Europe. It is also called a deaf adder, blindworm, or regionally, a long-cripple, steelworm, and hazelworm.

Despite its name, the common slow worm is neither a worm nor a snake.

Common slow worms are semifossorial (burrowing) lizards that spend much of their time hiding underneath objects. The skin of slow worms is smooth, with scales that do not overlap.

Etymology

The "blind" in blindworm refers to the lizard's small eyes, similar to a blindsnake (although the slow worm's eyes are functional). The common slow worm, i.e. the species Anguis fragilis, is often called simply "slow worm", though all species of the species complex comprising the genus Anguis are also called "slow worms".

The name "slow worm" is only contaminated by the word "slow". In Middle English, it was written "slowurm", from Old English "slāwyrm", where slā- means 'earthworm' or 'slow worm' and wyrm means "serpent, reptile".

Editorial summary

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

Editorial reviewA sound reference starting point where classification, measurement and the date of the underlying evidence remain visible. The current 161-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, Common, slow and worm is the immediate research focus.
Editorial analysis

Why this record matters

The phrase “species of reptile” 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

Stable identifiers, scientific names and standards terminology offer the best bridge between this overview and specialist evidence. The source revision retrieved here is dated Sep 16, 2026. The linked authority identifier is Q183660. 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 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.

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  1. Establish the record: confirm the title “Common slow worm”, its source revision and the description used here.
  2. Expand the search: follow Common slow worm primary sources, Common slow worm archive and Common 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.

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Source & attribution

This entry incorporates text from Common slow worm” 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.