Polystira nobilis is a species of sea snail, a marine gastropod mollusk in the family Turridae, the turrids.[1]
| Polystira nobilis | |
|---|---|
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Neogastropoda |
| Family: | Turridae |
| Genus: | Polystira |
| Species: | P. nobilis
|
| Binomial name | |
| Polystira nobilis (Hinds, 1843)
| |
| Synonyms[1] | |
|
Pleurotoma nobilis Hinds, 1843 | |
Description edit
The fusiform shell is solid and wrinkled. The uppermost whorls are concave, slightly striated and largest near the middle of the keel. Below, it shows small alternating keels. The suture is simple. The outer lip wraps slightly inwards.It is chiefly distinguishable from it in the absence of any keel between the principal keel and the suture, and in some minor characters. The epidermis is covered with pale brown. [2]
This is a very considerably larger shell than Polystira oxytropis, but in the character of the sculpture they closely approach each other.
Distribution edit
This marine species occurs in the Mexican part of the North Pacific Ocean.
References edit
- ^ a b Polystira nobilis (Hinds, 1843). Retrieved through: World Register of Marine Species on 5 April 2010.
- ^ - The Annals and magazine of natural history; zoology, botany, and geology; v.13=no.81-86 (1844)
External links edit
- Hinds, R. B. (1843). On new species of Pleurotoma, Clavatula, and Mangelia. Proceedings of the Zoological Society of London. (1843) 11: 36-46
- Todd J.A. & Rawlings T.A. (2014). A review of the Polystira clade — the Neotropic’s largest marine gastropod radiation (Neogastropoda: Conoidea: Turridae sensu stricto). Zootaxa. 3884(5): 445-491
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