Species found in “salt marsh” (13)

Ammonia aomoriensis T6

Order “Rotaliida” > Family “Rotaliidae” > Genus “Ammonia

Original description Asano, K., 1951, Hosokawa Printing, Tokyo, 1-21
Revision Hayward, B., W., Holzmann, M., Grenfell, H., R., Pawlowski, J., 2004, Mar. Micropal., 50, 237-271 (1.58 MB)
Further reference Schweizer, M., Polovodova, I., Nikulina, A., Schönfeld, J., 2011, Helgol. Mar. Res., 65, 1-10 (588 KB)

General description

See the paper of Hayward et al., 2004 for a morphological characterization.

Representative pictures

Ammonia aomoriensis T6_132, umbilical view Ammonia aomoriensis T6_132, spiral view
1 specimen

Elphidium excavatum

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

Original description Terquem, O., 1875
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 involute, envenly rounded to lobulate; periphery broadly rounded to sub-acute, no keel; papillae ornament sutural pits umbilicus and base of aperture face; umbilicus depressed or filled with one or more bosses.

Representative pictures

2 specimens

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

Haynesina orbiculare

Order “Rotaliida” > Family “Incertae sedis” > Genus “Haynesina

Original description Brady, H. B., 1881, Ann. Mag. Nat. Hist., London, 8, 415
Description Buzas, M., A., Culver, S., J., Isham, L., B., 1985, Journal of Paleontology, 59, 1075-1090
Further reference Pillet L, de Vargas C, Pawlowski J, 2011-07-01, Protist, 162, 3, 394-404

General description

Like H. germanica, this species lacks sutural bridges. Test periphery is rounded. The considerable development of granular material on the first chamber of the final whorl is typical of this species.

Representative pictures

1 specimen