Austrotoma excavata
| Austrotoma excavata | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Neogastropoda |
| Family: | Pseudomelatomidae |
| Genus: | Austrotoma |
| Species: | †A. excavata |
| Binomial name | |
| †Austrotoma excavata (Suter, 1917) | |
| Synonyms[1] | |
| |
Austrotoma excavata is an extinct species of sea snail, a marine gastropod mollusk in the family Pseudotomidae.[1]
Description
The shell features a subsutural fold that ranges from weak to moderate in prominence. Its spiral sculpture is restricted entirely to the base, while axial ribs appear only on the early whorls of the spire. The shoulder angle is sharply defined, characterized by a broad, smooth keel.[2][3]
Distribution
Fossils have been found in Middle Miocene strata at Kaipara, New Zealand.[3]
References
- 1 2 Austrotoma excavata (Suter, 1917). 30 April 2026. Retrieved through: World Register of Marine Species.
- ↑ Suter, H. (1917). "Descriptions of new Tertiary Mollusca occurring in New Zealand, accompanied by a few notes on necessary changes in nomenclature". New Zealand Geological Survey Paleontological Bulletin. 5 (i–vi): 55.
This article incorporates text from this source, which is in the public domain. - 1 2 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: 74. Retrieved 29 April 2026. (source-attribution}}
- Beu, A.G. & Maxwell, P.A. (1990) Cenozoic Mollusca of New Zealand. New Zealand Geological Survey Paleontological Bulletin, 58, 1–518.
- 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.