(Hauerina aff. earlandi)

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Hauerina aff. earlandi (Plesiotypes1&2 from sample Bioice3522: depth 1940 m; bottom water temp. 2,34°C; loc.62,5206°N, -17,1742°W Dec.Degr.) – Ljósm. Guðmundur Guðmundsson

Almennt

Hauerina aff. earlandi Rasheed, 1971

Hauerina earlandi – Rasheed, D.A. 1971 [aff.]. Some foraminifera belonging to Miliolidae and Ophthalmidiidae from the Coral Sea, south of Papua (New Guinea). Part 2. Madras University, Jour. Madras, India, sec. B, vol. 37-38 (1967-1968), p. 54-55.

Miliola earlandi (Rasheed, 1971) - Haig, D.W. 1988. Miliolid foraminfera from inner neritic sand and mud facies of the Papua Lagoon, New Guinea. Journal of Foraminiferal Research, vol. 18, no.3: pl.2, figs.8-9

Description: Test sub-triangular in end view and semi-circular to ovate in side view; chambers inflated. Chamber arrangement is triloculine; three chambers externally visible. Aperture ovate in juveniles, but cribrate in adults, consisting of numerous irregularly rounded to elongate openings, each bordered with a rim; apertural face slightly raised. Sutures flush but distinct. Test walls rather thin and moderately sturdy; surface sligthly corrugated and smooth, except for a coarse surface between the apertural openings. Length of largest specimen is over 1,5 mm, but most are around 1 mm.

Diagnosis: Test shape and chamber arrangement resembles Cruciloculina ericsoni and Cruciloculina asanoi, but differs in having a cribrate aperture.

Remarks: The type locality of H. earlandi is a shallow water tropical habitat. Whether the present specimens from the North Atlantic are conspecific, needs further validation.

Gudmundur Gudmundsson, IINH (gg@ni.is)

Útbreiðslukort

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Útbreiðsla Hauerina aff. earlandi (Bioice samples, red dots; miscellaneous samples, blue dots)

Myndir

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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.) – Ljósm. Guðmundur Guðmundsson
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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.) – Ljósm. Guðmundur Guðmundsson

Höfundur

Guðmundur Guðmundsson 2018

Biota

Ríki (Kingdom)
Einfrumungar (Protista)
Fylking (Phylum)
Götungar (Foraminifera)
Ættbálkur (Order)
(Miliolida)
Tegund (Species)
(Hauerina aff. earlandi)