Published December 31, 2008 | Version v1
Taxonomic treatment Open

Brookula Iredale 1912

Description

Brookula Iredale, 1912

Type species: Brookula stibarochila Iredale, 1912, OD.

Distribution: Mainly in the oceans of the southern hemisphere, northern hemisphere records from the Indian and Pacific Oceans only. Shallow water to abyssal depth (Gage & Taylor 1991). Miocene to Recent (Finlay 1924).

Diagnosis: Shell 1.2–2.5 mm, trochoid globose, thin, orthostrophic, paucispiral, dextral, with up to 4 rounded whorls. Periostracum absent. Umbilicus ranges from closed to widely open. Protoconch with smooth or anastomosing ribbed sculpture, up to 400 µm in diameter. Shell sculpture consists of axial ribs; spiral sculpture well defined, but weaker, sometimes overriding and forming beads at intersections with axial ribs; fine growth lines present. Suture deeply constricted. Aperture rounded, with a slightly thickened lip and complete peritreme, nacreous layer absent. Operculum circular, multispiral, with central nucleus.

Radula rhipidoglossate, formula 5­2­1­2­5; rhachidian stout, higher than wide, with cusped edge well serrated. Outer lateral and marginal teeth similar, except for smaller cusps in the latter.

Cephalic tentacles with a dense fringe of sensory papillae at the distal end; foot anterior with two wide, posterior with two shorter lappets, laterally with short, elongate epipodial tentacles without epipodial sensory organs but a fringe of slender hair­like cilia.

Other

Published as part of Schwabe, Enrico & Engl, Winfried, 2008, Description of two new deep­water species of the genus Brookula Iredale, 1912 (Mollusca, Gastropoda, Trochoidea), with a revision of the genus for the Subantarctic and Arctic Sector of the Atlantic Ocean *, pp. 187-204 in Zootaxa 1866 on pages 189-190, DOI: 10.5281/zenodo.183706

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Linked records

Additional details

Biodiversity

Family
Liotiidae
Genus
Brookula
Kingdom
Animalia
Order
Seguenziida
Phylum
Mollusca
Scientific name authorship
Iredale
Taxon rank
genus
Taxonomic concept label
Brookula Iredale, 1912 sec. Schwabe & Engl, 2008

References

  • Iredale, T. (1912) New generic names and new species of marine Mollusca. Proceedings of the Malacological Society of London, 10, 217 - 228, pl. 9.
  • Gage, J. D. & Tyler, P. A. (1991) Deep-sea biology: a natural history of organisms at the deep-sea floor, Cambridge, UK: Cambridge University Press, pp. 1 - 504.
  • Finlay, H. J. (1924) The family Liotiidae, Iredale, in the New Zealand Tertiary: Part 1. The genus Brookula. Transactions and Proceedings of the Royal Society of New Zealand, 55, 526 - 531, pl. 53.