Alanops
extinct genus of horseshoe crab
Alanops is a genus of xiphosuran from the Carboniferous Montceau-les-Mines lagerstätte of France. This genus contains one species, Alanops magnificus. It is known from over 140 specimens and was likely capable of volvation, as evidenced by features on its carapace.
Description
Prosoma
Alanops has a globose (spherical) prosomal shield with a circular outline. In side view this shield is strongly arched (around 3 times longer than tall) with the curvature increasing as it approaches the front. Its posterior (backwards) margin bends sharply downwards forming a flat wall partly closing off the prosoma. A faint peripheral flange can be seen as a low ridge running around the prosoma. This ridge also delineates two regions of the prosoma. The subfrontal area continues the ventral curvature of the frontal prosoma, with a small beak-like structure and lappet extending from the front. While the posterolateral (back and side) corners are rounded and lack spines, in a few small specimens these are still pointed.
“Alanops” enters the record as extinct genus of horseshoe crab. Crown Archives preserves that source wording while asking what Alanops, extinct and genus can confirm, complicate or overturn.
Why this record matters
“Alanops” is worth following because a concise public description often conceals a longer documentary argument. Here, Alanops, extinct and genus 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 Mar 12, 2026. The linked authority identifier is Q134350739. None of the 0 selected statements returned an explicit reference.
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.
- 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 “Alanops”, its source revision and the description used here.
- Expand the search: follow Alanops primary sources, Alanops archive and Alanops 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 “Alanops”?
- 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 “Alanops” 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.