Zeradina odhneri
| Zeradina odhneri | |
|---|---|
 | |
| Shell of Zeradina odhneri (specimen at Auckland Museum) | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Littorinimorpha |
| Family: | Vanikoridae |
| Genus: | Zeradina |
| Species: | Z. odhneri |
| Binomial name | |
| Zeradina odhneri A. W. B. Powell, 1927 | |
Zeradina odhneri is a species of sea snail, a marine gastropod mollusk in the family Vanikoridae.[1]
Description
The length of the holotype attains 4.5 mm, its diameter 1.4 mm.
(Original description) The shell is small, thin, elongate-ovate, and a dull white color. The protoconch is dome-shaped, rather large, and consists of 1 ½ smooth, glassy whorls. There are 4 ½ whorls in total, which are separated by a deep suture. The spire is a little higher than the aperture and features a convex outline.
The sculpture consists of exceedingly fine, numerous, and regular spiral striae (fine ridges or grooves), which are indistinctly reticulated (crisscrossed) by fine, close, thread-like axial growth lines. The aperture is narrowly ovate, being angled above and broadly rounded below. The peristome (the margin of the aperture) is thin and continuous, and it is separated from the parietal wall. The outer lip is flexuous; it is retractive below the suture for a short distance, where it forms a broad, shallow sinus, and it becomes protractive below the center of the whorl. [2]
Distribution
This marine species is endemic to New Zealand and occurs off Ahipara, Northland.
References
- ↑ MolluscaBase eds. (2023). MolluscaBase. Zeradina odhneri A. W. B. Powell, 1927. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=598644 on 2023-11-19
- ↑ Powell, A. W. B. (1927). Mollusca from twenty-three fathoms off Ahipara, N. Z. Transactions and Proceedings of the New Zealand Institute. 58: 295-300, pl. 34
This article incorporates text from this source, which is under a CC BY 4.0 license.
- Spencer, H.G., Marshall, B.A. & Willan, R.C. (2009). Checklist of New Zealand living Mollusca. Pp 196-219. in: Gordon, D.P. (ed.) New Zealand inventory of biodiversity. Volume one. Kingdom Animalia: Radiata, Lophotrochozoa, Deuterostomia. Canterbury University Press, Christchurch.
- 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.