Guraleus adelaidensis

Short description: Extinct species of gastropod

Guraleus adelaidensis

Temporal range: middle Miocene

PreЄ

Holotype from Auckland War Memorial Museum
Scientific classification
Kingdom:  | Animalia
Phylum:  | Mollusca
Class:  | Gastropoda
Subclass:  | Caenogastropoda
Order:  | Neogastropoda
Family:  | Mangeliidae
Genus:  | Guraleus
Species:  |

†G. adelaidensis

Binomial name
†Guraleus adelaidensis

A. W. B. Powell, 1944

Synonyms[1]

* Euguraleus adelaidensis (A. W. B. Powell, 1944)
* Guraleus (Euguraleus) adelaidensis (A. W. B. Powell, 1944)

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.

## Contents

* 1 Description
* 2 Taxonomy
* 3 Distribution
* 4 References

## Description

Reverse view of holotype

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 3​1⁄2 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

1. ↑ 1.0 1.1 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. https://www.biodiversitylibrary.org/page/41001312.
2. ↑ Guraleus adelaidensis A. W. B. Powell, 1944 †. Retrieved through: World Register of Marine Species on 12 January 2026.
3. ↑ 3.0 3.1 3.2 , Wikidata Q58676624 Template:Source-attribution-CC BY 4.0
4. ↑ 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.
5. ↑ 5.0 5.1 , Wikidata Q135397912
6. ↑ "Guraleus adelaidensis". Auckland War Memorial Museum. https://www.aucklandmuseum.com/discover/collections/record/236561.
7. ↑ , Wikidata Q136396722

Wikidata ☰ Q137715806 entry

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