Pleurotomella compacta explained

Pleurotomella compacta is a species of sea snail, a marine gastropod mollusk in the family Raphitomidae.^[1]

Description

The length of the shell attains 6.5 mm, its diameter 3 mm.

(Original description) The small shell is rather solid and has an ovate-conic shape. Its Colour is uniform buff. The shell contains six whorls, of which two compose the protoconch.

Sculpture

The protoconch is gradated, and coarsely, spirally, engraved. The subsequent whorls are rounded and excavate at the fasciole. The radial ribs are prominent, rounded, extending from the fasciolae to the base, set their own breadth apart, about twelve to a whorl. The spirals are delicate threads overriding the radials. On the body whorl they amount to twenty-four, of which three or four on the periphery are larger than the rest. The fasciolae is sharply sculptured by crescentic lamellae. The aperture is imperfect in the holotype. The sinus is sutural and of moderate depth.^[2]

Distribution

This marine species is endemic to Australia and occurs off New South Wales.

References

• Laseron, C. 1954. Revision of the New South Wales Turridae (Mollusca). Australian Zoological Handbook. Sydney : Royal Zoological Society of New South Wales pp. 56, pls 1–12.
• Powell, A.W.B. 1966. The molluscan families Speightiidae and Turridae, an evaluation of the valid taxa, both Recent and fossil, with list of characteristic species. Bulletin of the Auckland Institute and Museum. Auckland, New Zealand 5: 1–184, pls 1–23
• Beu, A.G. 2011 Marine Molluscs of oxygen isotope stages of the last 2 million years in New Zealand. Part 4. Gastropoda (Ptenoglossa, Neogastropoda, Heterobranchia). Journal of the Royal Society of New Zealand 41, 1–153

External links

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

Notes and References

1. MolluscaBase (2019). Pleurotomella compacta (Hedley, 1922). Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=868150 on 2019-02-03
2. https://archive.org/details/revisionofaustri00hedl Hedley, C. 1922. A revision of the Australian Turridae. Records of the Australian Museum 13(6): 213-359, pls 42-56