Mauidrillia angustata
| Mauidrillia angustata Temporal range:
| |
|---|---|
| Holotype from Auckland War Memorial Museum | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Neogastropoda |
| Family: | Horaiclavidae |
| Genus: | Mauidrillia |
| Species: | †M. angustata
|
| Binomial name | |
| †Mauidrillia angustata A. W. B. Powell, 1942
| |
Mauidrillia angustata is an extinct species of sea snail, a marine gastropod mollusc in the family Horaiclavidae.[1] Fossils of the species date to the early Miocene strata of the Mount Harris Formation at Pukeuri, Otago, New Zealand.
Description
The species has a small, narrowly fusiform shell with a spire 1.5 times the height of the combined length of the aperture and canal. The shell has 6.5 whorls, including a protoconch of 1.5 whorls. The species has moderately strong and oblique axials (14 on penultimare) which are thickened and laterally compressed at the periphery. The axials do not reach the shell' sutures. The shell has seven primary cords on the spire whorls, a narrow aperture, and a long canal. The spire sculpture is strong on either side of the periphery.[2]
The holotype of the species measures 9.5 mm (0.37 in) in height and 3.4 mm (0.13 in) in diameter.[2]
Taxonomy
The species was first described by A.W.B. Powell in 1942.[2] The holotype was collected from Pukeuri, Otago, New Zealand at an unknown date prior to 1943, and is held by the Auckland War Memorial Museum.[3][4]
Distribution
This extinct marine species occurs in early Miocene strata of the Mount Harris Formation at Pukeuri, Otago, New Zealand.[3]
References
- ^ Mauidrillia angustata A. W. B. Powell, 1942 †. 8 December 2025. Retrieved through: World Register of Marine Species.
- ^ a b c Powell, A. W. B. (1942). "The New Zealand recent and fossil Mollusca of the family Turridae, with general notes on Turrid nomenclature and systematics". Bulletin of the Auckland Institute and Museum. 2: 87. ISSN 0067-0456. OCLC 1826451. Wikidata Q115110377.
- ^ 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.
- ^ "Mauidrillia angustata". Collections Online. Auckland War Memorial Museum. Retrieved 8 December 2025.
Further reading
- P. A. Maxwell. 1988. Late Miocene Deep-Water Mollusca from the Stillwater Mudstone at Greymouth, Westland, New Zealand: Paleoecology and Systematics. New Zealand Geological Survey Paleontological Bulletin 55
- Maxwell, P.A. (2009). Cenozoic Mollusca. pp. 232–254 in Gordon, D.P. (ed.) New Zealand inventory of biodiversity. Volume one. Kingdom Animalia: Radiata, Lophotrochozoa, Deuterostomia. Canterbury University Press, Christchurch