Hyperammina elongata Brady, 1878

Lee, Sue Yeon, Yoo, Jung Sun & Kim, Seung Tae, 2017, Thirty new records of marine benthic Foraminifera from Korean waters, Journal of Species Research 6, pp. 75-93 : 79

2. Hyperammina elongata Brady, 1878 ( Plate 1. 2)

Hyperammina elongata Brady, 1878, p. 434 , pl. 20, figs.

2a-b (cited from Ellis & Messina, 1940).

Material examined. Korea, East Sea , station E4 (37°55 ʹ 4.816 ʺ N, 128°51 ʹ 11.786 ʺ E), 20 May 2016, by Van Veen Grab, collected by Raehyuk Jeong and Jisu Yeom, NIBR ID: NIBRPR0000107236 .

Diagnosis. Test composed of a large proloculus and an undivided tubular chamber of constant diameter, elongated, curved in the middle portion. Wall agglutinated with fine to middle size quartz. Initial end rounded, aperture terminal opened.

Remarks. According to Loeblich & Tappan (1987), this species is the type species of the genus Hyperammina Brady, 1878 . There are 32 modern species in this genus, and only one species was reported in Korea, H. rugosa Verdenius & van Hinte, 1983 . Hyperammina elongata has a finer agglutinated test and clearer proloculus than H. rugosa . Hyperammina rugosa has a very rough and coarsely agglutinated test wall, and specimens with a preserved proloculus are very rare.

Distribution. Korea, China, Japan, United States, Canada, Gulf of Saint Lawrence, Gulf of Mexico, Bay of Biscay ( France), Celtic Sea, North Atlantic Ocean, Norway, Arctic Ocean, Southern Ocean.