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Description ( anglais )

fourni par NMNH Antarctic Invertebrates

"Pleurotomella (Anomalotomella) rossi n.sp. (Figs 424, 425, 429)

MATERIAL EXAMINED: NZOI Stn A470; Eltanin Stn 1995; USNM 638845, 72°16'40"S, 170°18'00"E, 133 m (juvenile).

DISTRIBUTION: Known only from the Ross Sea in 133-377 m.

DESCRIPTION: Shell small, broadly biconic, creamy white. Whorls gently convex with a slightly concave sutural ramp, last whorl greatly inflated. Whorls 5 ½ including a protoconch of 2 ½ fairly bulbous whorls. Protoconch clearly marked off from teleoconch by an oblique varix. Under normal powers protoconch apparently sculptured with very fine spiral threads crossed by fine axial riblets. Under SEM (Fig. 425) spiral sculpture seen to be of irregular raised blotches more or less arranged in lines, with axial riblets equally irregular. Penultimate whorl with five fine spiral cords on the ramp, followed by a zone dominated by the axial sculpture following the line of the sinus. Margin of sinus sculptured by five very fine, closely spaced spiral threads. A further 10 more widely spaced spiral cords extend across the rest of the whorl. The same sculptural elements extend on to last whorl with additional fine, closely spaced spiral cords developed across the rest of the whorl, base and canal. The sinus is deep, situated on the ramp, essentially as in P. (A.) anomalapex Powell. Axial sculpture of fine riblets strongest on the shoulder where they trace the outline of the sinus, then bending very sharply forwards, curving broadly across the periphery, and on the last whorl sweeping backwards over the base and canal as little more than regular growth lines. Aperture narrowly ovate, drawn out into a moderately long, open canal. Columella almost straight, parietal lip excavated into surface of the last whorl.

MEASUREMENTS: height 11.9 mm, diameter 6.0 mm (holotype), height 6.8 mm, diameter 4.1 mm (paratype).

HOLOTYPE: from NZOI Stn A470 in NZ Oceanographic Institute (H.550).

PARATYPES: from NZOI Stn A470 in NZ Oceanographic Institute (one, P.756) and National Museum of New Zealand (one, MF.56622).

REMARKS: The nearest relative of this new species would appear to be P. (A.) frigida Thiele, from which it differs in the very much finer spiral sculpture and the much more swollen last whorl."

(Dell, 1990: 243)

Pleurotomella rossi ( anglais )

fourni par wikipedia EN

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

Description

The length of the shell attains 11.9 mm.

Distribution

This species occurs in the Ross Sea, Antarctica and off Visokoi Island, SE of island, South Sandwich Islands, South Atlantic Ocean at a depth between 93 mm and 121 m.

References

  1. ^ a b Pleurotomella rossi Dell, 1990. Retrieved through: World Register of Marine Species on 5 April 2010.
  • Engl, W. (2012). Shells of Antarctica. Hackenheim: Conchbooks. 402 pp.

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Pleurotomella rossi: Brief Summary ( anglais )

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Pleurotomella rossi is a species of sea snail, a marine gastropod mollusk in the family Raphitomidae.

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Pleurotomella rossi ( néerlandais ; flamand )

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Pleurotomella rossi is een slakkensoort uit de familie van de Raphitomidae.[1] De wetenschappelijke naam van de soort is voor het eerst geldig gepubliceerd in 1990 door Dell.

Bronnen, noten en/of referenties
  1. WoRMS (2012). Pleurotomella rossi Dell, 1990. Geraadpleegd via: World Register of Marine Species op http://www.marinespecies.org/aphia.php?p=taxdetails&id=197376
Geplaatst op:
09-03-2013
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Pleurotomella rossi ( portugais )

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Pleurotomella rossi é uma espécie de gastrópode do gênero Pleurotomella, pertencente a família Raphitomidae.[2]

Referências

  1. Pleurotomella rossi Dell, 1990. Consultado através de: World Register of Marine Species em 5 April 2010.
  2. «Marinespecies». Pleurotomella rossi (em inglês). Consultado em 6 de maio de 2010
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Pleurotomella rossi: Brief Summary ( portugais )

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Pleurotomella rossi é uma espécie de gastrópode do gênero Pleurotomella, pertencente a família Raphitomidae.

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Pleurotomella rossi ( vietnamien )

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Pleurotomella rossi là một loài ốc biển, là động vật thân mềm chân bụng sống ở biển trong họ Conidae.[1]

Miêu tả

Phân bố

Chú thích

Tham khảo


Bài viết liên quan đến phân họ ốc Raphitominae này vẫn còn sơ khai. Bạn có thể giúp Wikipedia bằng cách mở rộng nội dung để bài được hoàn chỉnh hơn.
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Pleurotomella rossi: Brief Summary ( vietnamien )

fourni par wikipedia VI

Pleurotomella rossi là một loài ốc biển, là động vật thân mềm chân bụng sống ở biển trong họ Conidae.

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