Nodosaria subsoluta

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Mynd: Guðmundur Guðmundsson

Nodosaria subsoluta (Plesiotype1, megalosphere side view, from sample Bioice3550: depth 290 m; bottom water temp. 7,6°C; loc. 64,1297°N, -24,1044°W Dec.Degr.)

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Mynd: Guðmundur Guðmundsson

Nodosaria subsoluta (Plesiotype, apertural view, from sample Bioice2708: depth 2170 m; bottom water temp. 3,13°C; loc. 64,7278°N, -30,125°W Dec.Degr.)

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Mynd: Guðmundur Guðmundsson

Nodosaria subsoluta (Plesiotype, side view, from sample Bioice2708: depth 2170 m; bottom water temp. 3,13°C; loc. 64,7278°N, -30,125°W Dec.Degr.)

1.

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Mynd: Guðmundur Guðmundsson

Nodosaria subsoluta (Plesiotype2, microsphere apertural view, from sample Bioice2237: depth 296 m; bottom water temp. 6,92°C; loc. 634528°N, -24,6875°W Dec.Degr.)

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Mynd: Guðmundur Guðmundsson

Nodosaria subsoluta (Plesiotype2, microsphere side view, from sample Bioice2237: depth 296 m; bottom water temp. 6,92°C; loc. 634528°N, -24,6875°W Dec.Degr.)

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Mynd: Guðmundur Guðmundsson

Dreifing tegundar eftir dýpi, seltu og sjávarhita, innan þess breytileika sem allar sýnatökustöðvar ná yfir, sýnt sem heildarspönn lóðréttra ása. Gögn úr botndýraverkefninu „BIOICE“. (ENGLISH – Occurrence zone of the species within the range of water depth, temperature, and salinity, spanned by the "Bioice" samples; demarcated by respective y-axes.)

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Mynd: Guðmundur Guðmundsson

Hæð stöpla svarar til fjölda sýna þar sem tegundin er: fágæt (1-2 eintök); sjaldgæf (3-8 eintök); alltíð (9-32 eintök); algeng (>32 eintök). Gögn úr botndýraverkefninu (Bioice). (ENGLISH- Column height represents number of samples in bins where the species is: rare (1-2 specimens); occasional (3-8 specimens); common (9-32 specimens); and abundant (>32 specimens.) Data from the Bioice programme.)

Almennt

Nodosaria subsoluta Cushman, 1923

Nodosaria subsoluta — Cushman, J., 1923. The Foraminifera of the Atlantic Ocean, Pt. 4, Lagenidae. United States National Museum Bulletin no.104. Pl. 13, fig. 1. – Eiland, M and G. Gudmundsson, 2004. Taxonomy of some Recent Nodosariinae (Foraminifera) from the North Atlantic, Micropaleontogy, plate 1, figures F, M; Plate 2, figure D.

Dentalina subsoluta (Cushman, 1923) — Jones, R.W. 1994. The Challenger Foraminifera, pp. 73 & 76; pl. 62, figs. 13-16; pl. 64, fig. 28.

Dentalina soluta (not Reuss, 1851) — Goës, A. 1894. A synopsis of the Arctic and Scandinavian Recent Marine Foraminifea higtherto discovered. Kongliga Svenska Vetenskaps-Akademiens Handlingar, vol.25(9): p. 70, pl. 12, fig. 690. — Flint, J.M. 1899 [imprinted 1897]. Recent Foraminifera – A descriptive catalogue of specimens dredged by the U. S. Fish Commission steamer Albatross. Report of the U. S. National Museum. P. 310, pl. 56, fig.3.

Description: Test stout, straight to slightly arcuate. Chambers subglobular to slightly pyriform. Chamber arrangement rectilinier, often slightly arcuate; successive chambers embrace about a quarter of the previous one, resulting in a nodular shape; number of chambers up to seven. Megalospheres have a short basal spine or knob. Aperture radial, protruding and central. Surface smooth, but a few specimens the base of the chambers have numerous faint and short longitudinal and irregular striations, somtimes associated with faintly granular or even spinous surface. Wall finely perforated, except the apertural face. Sutures horizontal and flush, visible as a faint irregular line. Length of the largest specimen is 9 mm, but most are around 5 mm. About 570 specimens were picked from 119 of the 1031 Bioice samples that were checked for forams.

Diagnosis: Differs from Nodosaria cf. N. farcimen, in being much larger, with more globular and inflated chambers. Most of the specimens have a smooth surface, although the chamber base in occasional specimens of N.subsoluta has finely granular to slightly hispid surface. Differs from Nodosaria cf. N subsoluta in that the pores are much smaller, barely visible in stereo microscope. 

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Útbreiðsla Nodosaria subsoluta (Bioice samples, red dots; miscellaneous IINH samples, blue dots)

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