Etremopsis contigua
| Etremopsis contigua Temporal range: | |
|---|---|
 | |
| Holotype from Auckland War Memorial Museum | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Neogastropoda |
| Family: | Clathurellidae |
| Genus: | Etremopsis |
| Species: | †E. contigua |
| Binomial name | |
| †Etremopsis contigua A. W. B. Powell, 1944 | |
Etremopsis contigua is an extinct species of sea snail, a marine gastropod mollusc, in the family Clathurellidae.[1] 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:
Close to opposita, but constantly of much smaller size, differing in having fewer, heavier, more broadly rounded axials, a much sharper peripheral angle, and a well developed parietal tubercle. Details of spiral sculpture as in opposita. Protoconch typical, tall, polygyrate, of 41⁄2 whorls, tip minute, lower whorls carinated below the middle, last whorl with strong brephic axials.[2]
The holotype of the species measures 4.1 mm (0.16 in) in height and has a diameter of 2 mm (0.079 in).[2]
Taxonomy
The species was first described by A. W. B. Powell in 1944.[2] The holotype was collected by W. Howchin and J. C. Verco in 1919 from the Metropolitan Abattoirs Bore in Adelaide, Australia, at a depth of between 122–152 m (400–499 ft), and is held by the Auckland War Memorial Museum.[3][4]
Distribution
This extinct marine species occurs in middle Miocene strata of the St Vincent Basin of South Australia, including the Dry Creek Sands.[3][5]
Gallery
Reverse view of holotype
Side view of holotype
References
- ↑ Etremopsis contigua A. W. B. Powell, 1944 †. Retrieved through: World Register of Marine Species on 19 February 2026.
- 1 2 3 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. - 1 2 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.
- ↑ "Etremopsis contigua". Collections Online. Auckland War Memorial Museum. Retrieved 19 February 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.