Amastra antiqua
species of mollusc
Amastra antiqua is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Amastridae.
Subspecies
Amastra antiqua antiqua (Baldwin, 1895)
Amastra antiqua kawaihapaiensis Pilsbry & C. M. Cooke, 1914
Description
The length of the shell attains 20 mm, its diameter 12 mm.
(Original description) The shell contains 6 whorls. The fossil shell is dextral, narrowly yet deeply perforated, with the perforation extending nearly to the apex. It is solid and elongately ovate, with a subacute apex. The surface is sculptured with coarse, irregular growth lines, while the apical whorls are smooth. The color of the living shell is unknown.
The shell consists of six convex whorls, separated by a well-impressed suture. The aperture is slightly oblique and sublunate. The peristome is thickened on the inner side, with the columellar margin adnate and slightly expanded over the umbilicus.
“Amastra antiqua” enters the record as species of mollusc. Crown Archives preserves that source wording while asking what Amastra, antiqua and species can confirm, complicate or overturn.
Why this record matters
“Amastra antiqua” is worth following because a concise public description often conceals a longer documentary argument. Here, Amastra, antiqua and species provides the most credible route into that argument.
Datasets, specimens, observations and peer-reviewed methods provide the appropriate test for the technical claims summarized here. The source revision retrieved here is dated May 16, 2026. The linked authority identifier is Q131402561. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1895 and 1914.
A general summary may omit uncertainty, sample limits or methodological disagreement that is explicit in the technical record. 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 “Amastra antiqua”, its source revision and the description used here.
- Expand the search: follow Amastra antiqua primary sources, Amastra antiqua archive and Amastra 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 “Amastra antiqua”?
- Which observation, specimen, dataset or publication supports the account?
- Has classification or technical consensus changed since the cited source?
Search terms from this dossier
This entry incorporates text from “Amastra antiqua” 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.