Brookula decussata

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

Brookula decussata
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Vetigastropoda
Family:	incertae sedis
Genus:	Brookula
Species:	B. decussata
Binomial name
Brookula decussata (Pelseneer, 1903) [1]
Synonyms
Brookula rossiana Dell, 1990 Brookula sinusbreidensis Numanami & Okutani, 1991 Brookula delli Numanami, 1996 Cyclostrema decussatum Pelseneer, 1903 (original combination)

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.