Austrocochlea constricta
A marine snail endemic to southern Australia with a thick, sculptured shell.
Last updated
G.W. Tryon · via Wikipedia: Austrocochlea constricta · Public domain
Austrocochlea constricta is a marine gastropod mollusk in the family Trochidae, known as the southern periwinkle or ribbon monodonta.[1] The species was originally described by Lamarck in 1822 and its taxonomic status is accepted.[2][3] The shell's vertical measurement spans from 15 to 32 mm, while its width falls between 22 and 28 mm.[4]
Scientific classification
- KingdomAnimalia
- PhylumMollusca
- ClassGastropoda
- SubclassVetigastropoda
- OrderTrochida
- FamilyTrochidae
- GenusAustrocochlea
- SpeciesAustrocochlea constricta
Named by (Lamarck, 1822)
Close relatives
Other species of Austrocochlea with a Codexery entry.
- Austrocochlea constellata Austrocochlea constellata
- Austrocochlea diminuta Austrocochlea diminuta
- Austrocochlea rudis Austrocochlea rudis
- Austrocochlea zeus Austrocochlea zeus
Sources: Wikipedia taxobox: Austrocochlea constricta (CC BY-SA 4.0) · order, family and genus agree with WoRMS AphiaID 546938 (CC BY 4.0)
Where the austrocochlea constricta has been recorded
Each dot is a place where the species has been observed and reported (2,989 records, half-degree grid) — not a modelled range. 49 inland records left out (institution coordinates).
Map: drawn by Codexery. Data: GBIF occurrence search (records CC0 / CC BY) · Natural Earth basemap (public domain)
Quick Facts
- Whorls
- about five
- Body whorl carinae
- about seven strong carinae
- Distribution
- endemic to Australia; New South Wales, South Australia, Tasmania, Victoria, Western Australia
Facts from the source article.
Biology and range
The shell is thick, solid, and imperforate, with a conical spire and an acute apex.[4] GBIF holds 3,538 occurrence records for this taxon.[3] The species is marine and belongs to the order Trochida.[2] The surface presents a dull, pale gray or white appearance, decorated with black zigzag patterns or spiral bands, and on occasion it is almost a single color.[4]
Approximately five convex whorls make up the shell; the initial whorl is worn away, and the one before last has three very prominent spiral ridges.[4] The final whorl carries roughly seven pronounced keels.[4] The lip at the outer edge and base can be either thick with many internal grooves, or fairly thin with slight indentations at the main keels.[4] The short columella sits at an angle, has a small tooth-like projection at its lower end, and extends as a thick callus across the parietal wall.[4]
What the specialist sources record
Tryon's 1889 Manual of Conchology describes the shell as having a short columella that is oblique and subdentate at its base.[5][4]
References
- Wikipedia, "Austrocochlea constricta" (CC BY-SA 4.0), which cites: Bouchet, P. (2012). Austrocochlea constricta (Lamarck, 1822). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=tax; Donald K.M., Kennedy M. & Spencer H.G. (2005) The phylogeny and taxonomy of austral monodontine topshells (Mollusca: Gastropoda: Trochidae), inferred from DNA s (original not read by us) en.wikipedia.org
- World Register of Marine Species, Austrocochlea constricta (AphiaID 546938). CC BY 4.0. marinespecies.org
- GBIF Backbone Taxonomy and occurrence index, Austrocochlea constricta (taxon key 4615612). CC BY 4.0 (backbone); counts are facts. gbif.org
- Wikipedia, "Austrocochlea constricta" (CC BY-SA 4.0), which cites: Tryon (1889), Manual of Conchology XI, Academy of Natural Sciences, Philadelphia (described as Monodonta (Austrocochlea) constricta) (we also read that source) en.wikipedia.org
- Tryon (1889), Manual of Conchology XI, Academy of Natural Sciences, Philadelphia (described as Monodonta (Austrocochlea) constricta). facts only, no text reused. archive.org
Each numbered sentence above was checked against the source it cites before publication. Sentences citing Wikipedia adapt text from the English Wikipedia article Austrocochlea constricta (contributors), used under CC BY-SA 4.0; this entry is available under the same licence. Other sources were used for facts only; no text or images are copied from them.
More in Marine Snails
Sources
Compiled from Wikipedia and the sources listed below. Text from Wikipedia is available under CC BY-SA 4.0; this entry is adapted from it.
- Wikipedia: Austrocochlea constricta (CC BY-SA 4.0).
- Classification: the source article's taxobox; order, family and genus checked against WoRMS, the World Register of Marine Species (CC BY 4.0).
- Occurrence records: GBIF (CC0 / CC BY). Basemap: Natural Earth (public domain).
- Word definitions: the Codexery glossary, each quoted from its Wikipedia article.
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