Pleurotomella gibbera Bouchet & Waren 1980
Creators
Description
Pleurotomella gibbera Bouchet & Warén, 1980
Fig. 16 a–c
Pleurotomella gibbera (Jeffreys ms) Bouchet & Warén, 1980 (p. 41, figs. 93, 220).
Pleurotomella gibbera Bouchet & Warén, 1980 ex Jeffreys ms.— Repetto et al. 2005 (p. 215, mid left fig.) Pleurotomella gibbera Bouchet & Warén, 1980 — De Frias Martins et al. 2009 (p. 65, figs. 242–244).
Diagnostic characters. Fusiform shell; spire whorls angular; concave subsutural shelf; oval aperture; moderately long siphonal canal; deep U-shaped anal sinus; 10 rounded and rather prominent collabral ribs per whorl; thin spiral cords increasing in number by intercalation during growth; blunt nodes at the intersections of ribs and cords. Protoconch: broadly conical; 5.5 whorls; diameter about 790 µm (protoconch I: 190 µm); height about 990 µm; first 1.5 whorls (protoconch I) with spirally connected T-shaped granules forming a square reticulated pattern; subsequent whorls (protoconch II) with sinuous collabral axial riblets and non-collabral prosocline riblets; the latter riblets absent in the adapical fourth, where only collabral riblets are present; spiral angulation on the last quarter whorl, with 2 additional spirals just before end of larval shell; transition to the teleoconch at deep sinusigera.
Occurrence. Box-corer samples BC66 (1 specimen), BC72 (2); cores BC04 (1), BC21 (2), BC67 (1), BC72 (1). Maximum height: 4 mm.
Distribution and habitat. Pleurotomella gibbera seems to have a restricted distribution from the Ibero- Moroccan Gulf and northwestern African waters to the western and central Mediterranean; it dwells on soft substrates in the 72–720 m depth interval (Bouchet & Warén 1980; Bouchet & Taviani 1992; de Frias Martins et al. 2009).
Fossil record. None recorded.
Notes
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Linked records
Additional details
Identifiers
Biodiversity
- Family
- Raphitomidae
- Genus
- Pleurotomella
- Kingdom
- Animalia
- Order
- Neogastropoda
- Phylum
- Mollusca
- Scientific name authorship
- Bouchet & Waren
- Species
- gibbera
- Taxon rank
- species
- Taxonomic concept label
- Pleurotomella gibbera Bouchet, 1980 sec. Negri & Corselli, 2016
References
- Bouchet, P. & Waren, A. (1980) Revision of the Northeast Atlantic bathyal and abyssal Turridae (Mollusca, Gastropoda). The Journal of Molluscan Studies, supplement 8, 1 - 119. http: // dx. doi. org / 10.1093 / mollus / 46. supplement _ 8.1
- Repetto, G., Orlando, F. & Arduino, G. (2005) Conchiglie del Mediterraneo: 1770 specie illustrate con distribuzione e frequenza. Amici del Museo " Federico Eusebio ", Alba, 392 pp.
- De Frias Martins, A. M., Borges, J. P., Avila, S. P., Costa, A. C., Madeira, P. & Morton, B. (2009) Illustrated checklist of the infralittoral molluscs off Vila Franca do Campo. Acoreana, Supplement 6, 15 - 103.
- Bouchet, P. & Taviani, M. (1992) The Mediterranean deep-sea fauna: pseudopopulations of Atlantic species? Deep-Sea Research, 39 (2), 169 - 184. http: // dx. doi. org / 10.1016 / 0198 - 0149 (92) 90103 - z