Guraleus adelaidensis
| Guraleus adelaidensis Temporal range:
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|---|---|
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| Holotype from Auckland War Memorial Museum | |
Scientific classification 
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| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Neogastropoda |
| Family: | Mangeliidae |
| Genus: | Guraleus |
| Species: | †G. adelaidensis
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| Binomial name | |
| †Guraleus adelaidensis A. W. B. Powell, 1944
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| Synonyms[1] | |
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Guraleus adelaidensis is an extinct species of sea snail, a marine gastropod mollusc, in the family Mangeliidae.[2] Fossils of the species date to middle Miocene strata of the St Vincent Basin of South Australia.
Description
In the original description, Powell described the species as follows:
Related to subnitidus, having same style of incised spirals, but the shell is smaller, more solid, with a carinate periphery and only three cords on the spire-whorls, and about 19 on the base. There are 5 distinct lirations on the shoulder or sinus area. The uppermost of the three cords on the spire-whorls forms the sharp median peripheral carina. Protoconch polygyrate, conic, of 31⁄2 smooth whorls with minute exserted tip, followed by a half whorl of rather strong vertical brephic axials.[3]
The holotype of the species measures 4.8 mm (0.19 in) in length and has a diameter of 2.1 mm (0.083 in).[3] It is one of the smaller members of the genus Guraleus. [1] The shell is fusiform, and the species can be distinguished due to there being ten axial costae on each whorl.[4]
Taxonomy
The species was first described by A. W. B. Powell in 1944.[3] The holotype was collected by W. Howchin and J.C. Verco in 1919 from the Metropolitan Abattoirs Bore in Adelaide, South Australia, at a depth of between 122–152 m (400–499 ft). It is held in the collections of Auckland War Memorial Museum.[5][6]
Distribution
This extinct marine species occurs in middle Miocene strata of the St Vincent Basin of South Australia, including the Dry Creek Sands.[5][7]
References
- ^ a b Ludbrook, N. H. (1958). "The molluscan fauna of the Pliocene strata underlying the Adelaide plains. Part V-Gastropoda (Eratoidae-Scaphandridae)". Transactions of the Royal Society of South Australia. 81: 91.
- ^ Guraleus adelaidensis A. W. B. Powell, 1944 †. Retrieved through: World Register of Marine Species on 12 January 2026.
- ^ a b c Powell, A. W. B. (1944). "The Australian Tertiary Mollusca of the Family Turridae". Records of the Auckland Institute and Museum. 3: 3–68. ISSN 0067-0464. JSTOR 42905993. Wikidata Q58676624.
This article incorporates text from this source, which is under a CC BY 4.0 license.
- ^ Thomson, Kirstie (2013). Evolutionary patterns and consequences of developmental mode in Cenozoic gastropods from southeastern Australia (Doctor of Philosophy thesis). University of Liverpool. doi:10.17638/00017953.
- ^ a b Blom, Wilma M. (2025). "Annotated Catalogue of Fossil and Extant Molluscan Types in the Auckland War Memorial Museum". Bulletin of the Auckland Museum. 22. doi:10.32912/BULLETIN/22. ISSN 1176-3213. OCLC 1550165130. Wikidata Q135397912.
- ^ "Guraleus adelaidensis". Collections Online. Auckland War Memorial Museum. Retrieved 12 January 2026.
- ^ Darragh, Thomas A. (August 2024). "A checklist of Australian marine Cenozoic Mollusca". Memoirs of Museum Victoria. 83: 37–206. doi:10.24199/J.MMV.2024.83.02. ISSN 1447-2546. Wikidata Q136396722.