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Brookula decussata (Pelseneer 1903)

Description

provided by NMNH Antarctic Invertebrates

Brookula decussata (Pelseneer)

Cyclostrema decussatum Pelseneer, 1903, pl. 5, fig. 48

TYPE LOCALITY. Bellinghausen Sea, 70ºS, 80º48’W.

St. 182. Schollaert Channel, Palmer Archipelago, 64º21’S, 62º58’W, 14 Mar. 1927, 278-500 m.

The specimens from St. 182 seem to be identical with Pelseneer’s species as far as I can judge from the rather sketchy illustration. They are very similar to pfefferi, but are smaller and have crisp, more definite sculpture with more numerous axials but fewer spirals.”

(Powell, 1951: 104)

Brookula decussata

provided by wikipedia EN

Brookula decussata is a species of sea snail, a marine gastropod mollusk unassigned in the superfamily Seguenzioidea.[2]

This species is considered sometimes a synonym of Brookula pfefferi Powell, A.W.B., 1951,[3] but B. decussata is somewhat smaller and a has a more definite sculpture with fewer spirals and more axials.[4]

Description

The maximum recorded size of the shell is 2.5 mm.

Distribution

This marine species occurs off the South Orkney Islands and off The Antarctic Peninsula.

References

  1. ^ Pelseneer, P. 1903. Mollusques (Amphineures, Gastropodes et Lamellibranches). Expédition Antartique Belge: Résultats Voyage du S. Y. Belgica en 1897-1898-1899 7: 85 pp., pls. 1–9.
  2. ^ Brookula decussata (Pelseneer, 1903). Retrieved through: World Register of Marine Species on 22 April 2010.
  3. ^ "Brookula pfefferi". Gastropods.com. Retrieved 12 January 2019.
  4. ^ Discovery Reports, Antarctic and subantarctic mollusca; v. 26 1954, p. 104
  • Powell, A. W. B. 1951. Antarctic and Subantarctic Mollusca: Pelecypoda and Gastropoda. Discovery Reports 26: 47–196, pls. 5–10
  • Dell, R. K. 1990. Antarctic Mollusca, with special reference to the fauna of the Ross Sea. Royal Society of New Zealand Bulletin 27: iv + 311 pp
  • Numanami, H. and T. Okutani. 1991. A new species of the genus Brookula collected by the icebreaker Shirase from Breid Bay, Antarctica (Gastropoda: Cyclostrematidae). Venus 50: 37–42.
  • Numanami, H. 1996. Taxonomic study on Antarctic gastropods collected by Japanese Antarctic research expeditions. Memoirs of National Institute of Polar Research (E)39: [v] + 244 pp.
  • Engl W. (2012) Shells of Antarctica. Hackenheim: Conchbooks. 402 pp.
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Brookula decussata: Brief Summary

provided by wikipedia EN

Brookula decussata is a species of sea snail, a marine gastropod mollusk unassigned in the superfamily Seguenzioidea.

This species is considered sometimes a synonym of Brookula pfefferi Powell, A.W.B., 1951, but B. decussata is somewhat smaller and a has a more definite sculpture with fewer spirals and more axials.

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Classification

provided by World Register of Marine Species
Brookula (s.l.)

Reference

Griffiths, H.J.; Linse, K.; Crame, J.A. (2003). SOMBASE - Southern Ocean mollusc database: a tool for biogeographic analysis in diversity and evolution. Organisms Diversity and Evolution. 3: 207-213.

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Appeltans, Ward, W.