Cylindroclavulina bradyi ( Cushman, 1911 )

Lee, Somin Lee and Wonchoel, 2019, Three new records of recent benthic Foraminifera from Korea, Journal of Species Research 8 (4), pp. 389-394 : 392

2. Cylindroclavulina bradyi ( Cushman, 1911)

( Plate 1 . 2a- d)

Clavulina bradyi Cushman, 1911, p. 73 -74, figs. 118-119.

Cylindroclavulina bradyi : Bermúdez and Keys, 1952, p. 76; Loeblich and Tappan, 1987, p. 182, pl. 201, figs. 7-13; Jones, 1994, p. 53, pl. 48, figs. 32-38; Debenay, 2012, p. 79.

Material examined. 1 individual, Korea, East China Sea, station 10 (32°30ʹN, 127°00ʹE), 8 August 2019, by Smith-McIntyre grab, collected by Somin Lee and Nayeon Park, MABIK ID: MABIK PR00043231 .

Diagnosis. Test is free, stout, elongated, and slightly tapering toward the rounded initial end. Chambers are not distinctly marked externally. Early triserial stage is not clearly observed in exterior, and the later portion is uniserial with slightly depressed sutures. Wall is composed of fine to coarse heterometric sediment grains and the test surface is greyish in color. Aperture is terminal, rounded, and somewhat flaring at the end of a short neck. Test length is about 2.95 mm.

Remarks. This species is originally classified as Clavulina bradyi by Cushman (1911), and later accepted to Cylindroclavulina bradyi as a type species of the genus Cylindroclavulina by Bermúdez and Keys (1952). There are four modern species belonging to this genus ( Hayward et al., 2018b): C. atlantica , C. bradyi , C. elongata and C. ovata . Cylindroclavulina bradyi is morphologically most similar to C. elongata , but the latter has more narrowly elongate test, more distinct neck and teeth, and more loosely agglutinated test wall ( Ellis and Messina, 1940). The present specimen is somewhat more elongated and slenderer than the type specimens described by Cushman (1911) and very similar to the specimens recorded by Jones (1994, plate 48, figure 32) and Debenay (2012).

Distribution. Korea, China, Japan, Micronesia, New Caledonia, and New Zealand.

Class Nodosariata Mikhalevich, 1992 emend. Rigaud et al., 2015

Order Vaginulinida Mikhalevich, 1993

Family Vaginulinidae Reuss, 1860

Genus Saracenaria Defrance, 1824

Figures

Plate 1. 1. (a-d) Ammobaculites formosensis Nakamura, 1937; 1a. SEM image, side view; 1b. Digital camera image, side view; 1c. Frontal view; 1d. Apertural side view. 2. (a-d) Cylindroclavulina bradyi (Cushman, 1911); 2a-b. Side view; 2c-d. Apertural side view. 3. (a-d) Saracenaria hannoverana (Franke, 1936); 3a. Side view; 3b. Ventral view; 3c. Dorsal view; 3d. Apertural side view.