Syntomodrillia circinata
| Syntomodrillia circinata Temporal range:
| |
|---|---|
| Holotype from Auckland War Memorial Museum | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Neogastropoda |
| Family: | Drilliidae |
| Genus: | Syntomodrillia |
| Species: | †S. circinata
|
| Binomial name | |
| †Syntomodrillia circinata Powell, 1944
| |
Syntomodrillia circinata is an extinct species of sea snail, a marine gastropod mollusc in the family Drilliidae.[1] Fossils of the species have been found in strata of the Port Phillip Basin of Victoria, and date to either the late Oligocene or the early Miocene.
Description
In the original description, Powell described the species as follows:
Species very similar to obsoleta, but much larger, axials more erect, and connected across the shoulder-angle by a weak thread; five moderately strong spirals on the neck. Axials 11 per whorl.[2]
The holotype of the species measures 6 mm (0.24 in) in height and 2.5 mm (0.098 in) in diameter.[2]
Taxonomy
The species was first described by A.W.B. Powell in 1944.[2] The holotype was collected from Torquay, Victoria at an unknown date prior to 1944, and is held by the Auckland War Memorial Museum.[3][4]
Distribution
This extinct marine species dates to either the late Oligocene or the early Miocene, and occurs in the strata of the Port Phillip Basin of Victoria, Australia, either the Jan Juc Formation or the Puebla Formation.[3][5]
References
- ^ a b Syntomodrillia circinata A. W. B. Powell, 1944 †. 13 November 2025. Retrieved through: World Register of Marine Species.
- ^ 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.
- ^ 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.
- ^ "Syntomodrillia circinata". Collections Online. Auckland War Memorial Museum. Retrieved 13 November 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.