Asperdaphne exsculpta
| Asperdaphne exsculpta Temporal range:
| |
|---|---|
| Holotype from Auckland War Memorial Museum | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Neogastropoda |
| Family: | Raphitomidae |
| Genus: | Asperdaphne |
| Species: | †A. exsculpta
|
| Binomial name | |
| †Asperdaphne exsculpta A. W. B. Powell, 1944
| |
| Synonyms[1][2] | |
| |
Asperdaphne exsculpta is an extinct species of sea snail, a marine gastropod mollusc, in the family Raphitomidae.[1] Fossils of the species date to the middle Miocene strata of the St Vincent Basin of South Australia.
Description
In the original description, Powell described the species as follows:
Shell small, broad, with angulate whorls, deeply excavated at the sutures. Protoconch papillate, of 21⁄2 whorls, tip exserted, peg-like, the whole sculptured with 10 spiral lirations abruptly terminated at the first axial of the post-nuclear sculpture. Axials heavy, rounded, 10 per whorl, crossed by sharply raised spiral cords and interstitial threads. Spire-whorls with three spiral cords, body-whorl with six, each inter-space bearing a single thread. Additional to these, there is one thread on the concave shoulder just above the uppermost cord, and eight strong, closely spaced cords on the anterior end. Sinus sutural, moderately deep.[3]
The holotype of the species has a height of 3.9 mm (0.15 in), and a diameter of 2.15 mm (0.085 in).[3]
Taxonomy
The species was first described by A. W. B. Powell in 1944 as Asperdaphne (Aspertilla) exsculpta.[3] The holotype was collected by W. Howchin and J.C. Verco in 1919 from the Metropolitan Abattoirs Bore in Adelaide at a depth of 122–152 m (400–499 ft). It is part of the Finlay Collection, held by the Auckland War Memorial Museum.[4][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.[4][7]
References
- ^ a b Asperdaphne exsculpta A. W. B. Powell, 1944. 11 December 2025. Retrieved through: World Register of Marine Species.
- ^ Darragh, T.A. (1970). "Catalogue of Australian Tertiary Mollusca (except Chitons)". Memoirs of the National Museum of Victoria. 31: 157.
- ^ 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.
- ^ 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.
- ^ "Asperdaphne (Aspertilla) exsculpta". Collections Online. Auckland War Memorial Museum. Retrieved 2 March 2026.
- ^ 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, Incorporated. 81: 96 – via Biodiversity Heritage Library.
- ^ 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.