Maoritomella equispiralis
| Maoritomella equispiralis Temporal range:
| |
|---|---|
| Holotype from Auckland War Memorial Museum | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Neogastropoda |
| Family: | Borsoniidae |
| Genus: | Maoritomella |
| Species: | †M. equispiralis
|
| Binomial name | |
| †Maoritomella equispiralis A. W. B. Powell, 1944
| |
Maoritomella equispiralis is an extinct species of sea snail, a marine gastropod mollusc, in the family Borsoniidae.[1] Fossils of the species date to the late Oligocene, and are found in the strata of the Port Phillip Basin of Victoria, Australia.
Description
In the original description, Powell described the species as follows:
Shell slender, with lightly convex whorls; spire outlines almost straight; no peripheral carina. Spiral cords strong, more or less of equal development, 4 to 5 on early whorls, 6 from penultimate onward. About 25 spirals on body-whorl from suture to anterior end. Axial threads crowd the interspaces and actually cross and cancellate the weaker spirals.[2]
The holotype of the species measures 12.5 mm (0.49 in) in length and has a diameter of 4.2 mm (0.17 in).[2]
Taxonomy
The species was first described by A. W. B. Powell in 1944.[2] The holotype was collected from Torquay, Victoria, Australia, at an unknown date prior to 1937. It was held in the H.J. Finlay Collection, which was sold to the Auckland War Memorial Museum in 1937.[3][4]
Distribution
This extinct marine species occurs in late Oligocene strata of the Port Phillip Basin of Victoria, Australia, including the Jan Juc Formation.[3][5]
References
- ^ Maoritomella equispiralis A. W. B. Powell, 1944 †. Retrieved through: World Register of Marine Species on 15 December 2025.
- ^ 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.
- ^ "Maoritomella equispiralis". Collections Online. Auckland War Memorial Museum. Retrieved 15 December 2025.
- ^ 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.