Crassiclava layardi

Crassiclava layardi
	Apertural view of a shell of Crassiclava layardi
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Caenogastropoda
Order:	Neogastropoda
Superfamily:	Conoidea
Family:	Pseudomelatomidae
Genus:	Crassiclava
Species:	C. layardi
Binomial name
	Crassiclava layardi; (Sowerby III, 1897)
Synonyms
	Clavatula hottentota Barnard, 1958; Crassispira hottentota Kilburn, 1970; Crassispira layardi (Sowerby III, 1897); Drillia hottentota (non Smith, 1882); (partim) Barnard, 1958; Drillia layardi (Sowerby III, 1897); Drillia sowerbyi Turton, 1932 (non Pleurotoma sowerbyi Reeve, 1843); Pleurotoma castanea (non Reeve, 1845) Sowerby, 1886; Pleurotoma layardi Sowerby III, 1897; Pleurotoma (Drillia) layardi Sowerby III, 1897 (original combination);

Crassiclava layardi is a species of sea snail, a marine gastropod mollusk in the family Pseudomelatomidae, the turrids and allies.^[1]

Description

The length of the shell attains 12 mm, its diameter 4 mm.

The smooth, turreted, narrowly claviform shell is reddish brown to uniform dark brown. It shows 7 moderately strong longitudinal ribs. It contains 7 obtusely angulated whorls, above the shoulder slightly concave, below almost convex. The spiral lirae are feeble. The aperture is oblong-ovate. The columella is upright and shows a slight callus on top. The outer lip is arcuate with a wide sinus and not deeply emarginate.^[2]

Distribution

This marine species occurs from Table Bay to East London, Republic South Africa

References

^ ^a ^b Crassiclava layardi (Sowerby III, 1897). Retrieved through: World Register of Marine Species on 7 July 2012.
^ Sowerby, G. B. (1897). "Appendix to Marine shells of South Africa : A catalogue of all the known species : With references to figures in various works, descriptions of new species, and figures of such as are new, little known, or hitherto unfigured". doi:10.5962/bhl.title.13312.

Turton W.H. (1932). Marine Shells of Port Alfred, S. Africa. Humphrey Milford, London, xvi + 331 pp., 70 pls. page(s): 22, pl. 4, sp. 170
Kilburn, R.N. & Rippey, E. (1982) Sea Shells of Southern Africa. Macmillan South Africa, Johannesburg, xi + 249 pp. page(s): 116
Steyn, D.G. & Lussi, M. (1998) Marine Shells of South Africa. An Illustrated Collector's Guide to Beached Shells. Ekogilde Publishers, Hartebeespoort, South Africa, ii + 264 pp.

page(s): 152

External links

Tucker, J.K. (2004). "Catalog of recent and fossil turrids (Mollusca: Gastropoda)" (PDF). Zootaxa. 682: 1–1295. doi:10.11646/zootaxa.682.1.1.

[WoRMS-1] Crassiclava layardi (Sowerby III, 1897). Retrieved through: World Register of Marine Species on 7 July 2012.

[2] Sowerby, G. B. (1897). "Appendix to Marine shells of South Africa : A catalogue of all the known species : With references to figures in various works, descriptions of new species, and figures of such as are new, little known, or hitherto unfigured". doi:10.5962/bhl.title.13312.

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