Species found in “White sea, Umba, Russia” (2)

Elphidium albiumbilicatum

Order “Rotaliida” > Family “Elphidiidae” > Genus “Elphidium

Original description Weiss Lawrence, 1954, Survey Prof. Paper
Further reference Pillet L, de Vargas C, Pawlowski J, 2011-07-01, Protist, 162, 3, 394-404

General description

Test planispiral, bilaterally symmetrical; sutural canal system opens into a single row of pores; septal bridges usually hollow and contain a retral process; aperture a series of large circular pores at base of aperture face.

Representative pictures

1 specimen

Elphidium williamsoni

Order “Rotaliida” > Family “Elphidiidae” > Genus “Elphidium

Original description Haynes, J., R., 1973, Bull. Br. Mus. (Nat. Hist.) Zool. Suppl. 4, 1-245
Description Hayward, B., W., Hollis, C., Grenfell., H., 1997, New Zealand Geol. Surv. Paleontol. Bull., 72, Institute of Geological and Nuclear Sciences monograph 16.

General description

Test with evenly rounded outline, becoming lobulate in later part; periphery broadly rounded to sub-acute; septal bridges long, evenly spaced, numerous.

Representative pictures

2 specimens